*So the elderly spend what could be their last months/years in isolation? I don't know what the solution is but I really don't think it's that.
How do you define elderly for a start? DH is 65 and still working. I'm younger and have to go to work so are we supposed to isolate from each other (hypothetical question as we couldn't do it)? What if the elderly think 'sod it, I'm not doing it'? My uncle is 86 and has been going out and about as he's decided life's too short and I don't blame him.*
I don't blame your uncle either. Also I am 60 myself, dh is 62, both still working. But in this far from ideal situation, what else can be done? I would give support to those who need to shield, are advised to shield re. age, disability etc. Of course, that doesn't mean take away individual choice. It means make it possible if desired.
But I really do not believe these lockdowns are sustainable. Older people may have lost, hopefully temporarily, their younger family members in close contact, but young people have lost careers, university places, and much more. A lot has been asked of them. I don't think we can ask more.
I am fit and well, happy to take precautions and carry on working. My neighbour, post cancer, 10 years younger than me, is not, but shielding has ended for her.