It's a sweeter way of saying "I want this place until I die to avoid the hell of moving again" which is what my spouse said repeatedly.
I know my actual forever home is currently listed in my funeral plans as the natural burial place just outside the city, but fewer people want to talk about that forever home. Somehow it's seen as morbid.
I definitely considered aging for my until I die place, but I'm overly practical in this area. First thing I loved when looking at this place for the first time is that there is a lovely ramp to the front door - literally said 'ooo, that's nice' before I realized it's probably weird to say that about a ramp. That there are beautiful handrails and we could see where the stairlift and emergency intercoms were removed was part of what sold it to us - homes that can be adapted for actual life is for many the ideal. That few homes are built now with that really in mind even with the standards meant to do so is disheartening.
Not everyone's ideal 'until I die' home is that big to be "rattling". My in-laws were in a 2 up, 2 down. It was actually really difficult to find space in their later years for the equipment that would help their quality of life and for carers to do what they needed safely. That stuff takes up quite a bit of space. We ended up having to turn their living room into a bedroom not because an issue with stairs, but it was the only room big enough for all the medical equipment she needed in bed and have space for carers as well. My home is a bit bigger than theirs, but it's a pretty standard '50s concrete home. I won't be rattling even if my dream of a Golden Girls years doesn't happen. My maternal grandparents had a far larger place floor space-wise, but after my grandmother lost a leg, it didn't feel so roomy with all the things she needed and trying to care for those needs. The only smaller place that was of any use were those already medically equipped.
There are people in mansions and several homes that are barely used & whole buildings that are being left to rot, why the fuck would anyone call people with a couple spare bedrooms which could be used for anything up to and including carer spaces "hogging" with that going on. It feels like it's looking at the wrong people in regard to the housing problem and I think ignores that disabilities - across ages - tend to involve thing that need more space, not less.