Yes, and I think there's a lot of joy in simple things. Often big spenders are looking for joy that's missing fron their lives. I would far far rarher hike up a mountian with a packed lunch than have a fortnight in an exclusive hotel in Dubai.
I get far more joy out of finding something I already own and can repurpose than I do out of buying something new.
I haven't taken things as extrme as them. I enjoy good food, but by way of buying quality ingredients to prepare simple meals, and a very nice restaurant once in a blue moon for a special occasion, not eating out reguarly. I hate it if I get caught out and have to buy a bottle of water because that spending adds nothing to my life and is not necessary, but I wouldn't turn down drinks with friends to save money.
The mindset that "treats" and "joy" need to involve spending is harmful and not making anyone happy imo.