> There’s nothing particularly scary about having an older population curve, it just means that society has to adjust by having higher savings rates for individuals and government retirement programs.

Savings are meaningless if the saved money can't buy the work of young, able workers. Elderly people would just waste their savings outbidding each other for the services of the few younger people left. Numbers in your bank account can't do a hip replacement and change your saline solution. People do.