Fair point, in hindsight it seems I may have thrown this book recommendation in under the wrong comment.
It's relavant to this Ask HN question at large as we very much need to move away from blind pursuit of unlimited growth in population, resource consumption, waste byproducts, etc. and address the question of how to live well within our means.
Aging population demographics is a challenge, but one that we must address and then move beyond to a move persistent and sustainable low term distribution.
As for the current situation, I am 60, my father was born in 1935 and lives here in the same town as I do. He takes meals on wheels to the older folks who aren't all that mobile (yes, he's almost 88, walks 10km per day, and maintains a 15 km long section of a 1,000 km long walking trail) which is indicative of the entire community which has the highest median age in this country.
There is scope to employ able older people to look after less able older people which gives provides purpose, companionship, and reduces the demand for younger pople in care roles, etc.
This is not a full solution but it is a partial path forward.