To think a lot of homes are “soulless” and all people care about is size?

Why can't shopping for grey furniture at ikea be "personality". Neutral minimalism is a legitimate, deliberate style choice. Why does something being second hand give it more "personality"? Why is deliberately seeking out used furniture any more personal than deliberately going to ikea?

No, he can't have 1 room full of all his stuff. We don't have any spare rooms in our house, we live in a tiny little cottage.
I don't care if you think it's sad!
I spent over 10 years living surrounded by all of his collections of artefacts, wall hangings and swathes of Asian fabrics. Ornaments on every surface. Wooden carvings hanging on the walls. Fabrics thrown over the sofa and on the bed. Statues on shelves. Huge great wooden cravings on the floors. All his worldwide collections literally everywhere. All of it was bought whilst we were in those countries together. And on every single occasion that he bought those things from markets, street stalls and shops, I said "I don't really like that". I pointed out things that I did like, and he point blank refused to compromise and stuck to buying all this stuff that only he liked. Other times I said "John, you're buying so much stuff from all these countries, every country we go to you buy all these things, where on earth are we going to put them all when we get home?!?". It was a genuine question every time I asked him.
So when he did fill our home, OUR home, not HIS home, with all his stuff, it made me feel claustrophobic. I kept telling him none of it was my taste. I kept asking if we could compromise and maybe keep some bits out but perhaps put some things in storage? So that maybe I could enjoy my living environment too, by making it less cluttered and less full of things I don't like? Nope. He wouldn't entertain the idea and would start arguing and shouting at me. Saying I had no taste. Saying I wasn't cultured.
So one day, after 11 years of living like this, I boxed everything up and put it all in the loft. He went ballistic. I stuck up for myself. And that's where his stuff has stayed.
As I say, he argues at me every day about it.
He's controlling.
He's selfish.
He demonstrated for years that he didn't care about what I liked or didn't like, or about my tastes, or about how little I was enjoying living in the way our home was furnished in all his stuff.
So I did something about it.
And if that makes you sad, then so be it.

I thought 'personality' happened in a home because you live there. If you deliberately placed things to 'show' your personality, is that really you? My house just happened because we were in it. There's records and CDs in it because H likes music. There's books because I like books. Not because it's a design aesthetic. I read a lot, he listens to music, and Kindles and Spotify didn't exist when we were younger, so we have the physical things. I like rereading books, he likes listening to vinyl. I don't get why people would have those things just for show, or leave them strewn about. Ours are on their proper shelves.
I will say, we moved recently from a furnished rental and I was shocked at how much even IKEA furniture costs. Fortunately, we have a house with dark wood in it, so we took full advantage of the fact that people don't like old brown furniture to get second hand stuff that won't fall to bits. £30 for a wooden extendable dining table and four chairs! Nest of tables a tenner. Dark wood Welsh dresser, forty quid. Large chest of drawers for bedroom, £60. And the list goes on. To get all matching new would have been thousands. I couldn't believe how much a new bedside table that was made of MDF and looked it cost in the bedroom furniture shop.

Why do you continue to pursue the narative that anyone who doesn't like to clutter their houses up with "stuff" lives in a characterless grey, soulless box?

As @DeeDeesfabulouswardrobe has pointed out it isn't either or you know.

The video you posted has too much clutter in it. My house is not a grey characterless box. I have photos, plants, pictures, books, CDs and DVDs, but they are not piled haphazardly they way they are in the video. I can put things on my coffee table and there is nothing on the floor that shouldn't be there.

Also, many people have no idea about interior design. I don't. They probably have neither the time, the inclination nor the money to imprint their "personality" on their homes

Peoples perceptions and tastes are wildly different when it comes to decor.
Personally, I love mid century modern / industrial / art deco living spaces and as sparse and uncluttered as possible, some would say sterile austere and boring. I would say clean streamlined and relaxing.

Others prefer ornament, pattern, decoration, frills, "memories" "mementos" "feature walls" "floral prints" and I see it as cluttered, overly busy, frou frou and claustrophobic.

The house in the video could do with a nuking from Marie Kondo imo. Not for me at all.

No, most people don't dust every day. But most people don't have books on every square inch of their house.
Both examples you've posted are big fancy houses. I'd be interested to see an example of an aesthetic you like in an average sized house, because most people don't actually have big fancy houses do they?. Why isn't neutral minimalism a personal aesthetic? Why is a posh house full of expensive clutter the marker of "personality"?

Well yes, if you came on here and said you can’t understand why someone wants to wear a flowery dress because you hate flowery dresses I would think the same, I may even agree with you that I personally don’t like flowery frocks but I can understand that other people do.

But why can't the sterile grey space be an indicator of a personality? Someone who likes their space to be trendy and uncluttered lives in that place, they don't have the time or inclination to rummage around flea markets or up cycle furniture or agonise over the story of their life being told by old tea cups they found in a charity shop, Next/Dunelm are much easier to get along with and anyway they have as much right to be the way they are as anyone surely?
The house you linked would irritate me to visit and stress me out to spend any amount of time there. Carefully curated crap everywhere, patterns an eyesore, hate the colours etc.
Luckily for me I get to live in my house my way (which isn't grey, I don't like grey either, but I will defend the right to freedom of paint) 😊

It’s just a different aesthetic to what you like 🤷🏻‍♀️ I don’t really get it, people like different things to you.

What's wrong with people who prefer minimalism and tidiness? I personally find the cluttered houses with "personality" to be very off putting but I don't have to live in them so I don't really care.

I meant a link to the houses you don’t like.

Can you post an example of what you mean, a home account with that aesthetic OP?

Which is it? Do minimalist homes lack personality or do they reflect those living in them (aka their personality)? You also mentioned in the OP people prioritising size, and yet the example you have used is a very large expensive house.
"Grey boxes" are well suited to those without hours a day to dedicate to dusting?

Some objects are pretty but many are just large, mismatched and randomly coloured. From your original thread about not liking massive homes lacking character, now we come to this lady who has massive home with tons of objects covering every single nook, cranny, windowsill and table

This is nice. I’d far rather sit in this room than some of the grey, empty, boring rooms I see online. It’s light but cosy. My dc’s friends often used to comment on our bookshelf. They did not have any in the house! I once had a woman tell me that my home was ‘like a museum’ (I have a lot of antique furniture and prefer old things). I like cosy.

Is it not just that sort of aesthetic that you like though?
Eg. I have a few elderly relatives whose homes are full of meaningful objects and personality but they live in ex-council houses with swirly carpets, trinkets and ornaments everywhere (including souvenirs from gift shops at every seaside resort they ever visited) including the fridge covered in souvenir magnets, lots of patterns and colours but very old-fashioned- think those long frilly bedsheets that reach the floor and the weird caravan-type storage that goes on the wall around the bed. So their houses really do express the owner and their lives and personality. But I just feel this would be the ‘wrong’ aesthetic to you.

There's really a limit to how many truly "meaningful" objects one can acquire... it's just buying stuff because you like clutter. And that's fine if you like it, but it's not superior.