This 'call them boomers, then we can demonise them as selfish & having had it easy all their lives' is rubbish & dangerous. From my viewpoint, younger adults fall for it through ignorance of the past.
Don't they realise that this is how things have always been? In the 1960s & 70s I knew personally, or was aware of, plenty of people living on their own or as a couple in houses, bungalows or apartments which today would be characterised as being too big for their needs. One old lady I knew lived in a modest terrace house but only used the ground floor due to a health condition. Some people were in houses they'd raised their family in. Other people were simply wealthy enough to buy whatever they wanted.
And so what? It's a free country. This is the way it's always been. And there's always been talk of a housing shortage.
We bought our house in the 1980s. We're still here, just the two of us, same as it ever was. It still suits our needs. But suddenly we're 'utterly selfish'.
And far from having it easy all our lives, neither my husband nor I inherited anything or had any help financially from our families or from anyone else. What we've got, we worked for, starting out with precisely, literally, nothing. My family were so appalling that they made me homeless when I was recovering from a serious illness. I had to shift for myself & get a job & somewhere to live when I should have been convalescing. If that's the sort of luxury life these offensive young adults envy, they can have it.
What younger adults today are seeing is those of us who survived the vagaries of life & managed to get what we wanted through our own hard graft. They don't see the graft, because they weren't alive then. They don't understand people's lives, or social history. They're easy to manipulate by governments who like to divide & conquer. Previously it's been benefit scroungers, the disabled, refugees & immigrants who've been 'the enemy' who are doing you down. Now it's the older generation. Don't fall for it.