That is to say, there won't be enough workers to pay for the pensions of all those long-living retirees.
For me the worst of it is the assumption that pensions can only be funded from earned Income, and not from the unearned Income generated by productive Capital in private ownership.
There is plenty of wealth available to provide pensions, but no political ability to tax it, and indeed the entire rhetoric of contemporary economics is designed to even preclude the thought.... "Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky
Article's North-European examples show that "socialist" state has non-trivial better consequences from even demographic point of view. But as usual in today's media, loudest conclusions do not relate to most interesting observations.
As for "unrecoverable" falling-off-a-cliff effects, I can think of many more cliff divings that are much more impossible to recover from than a population revival. Perhaps our biological clocks know better when are times to multiply and when just to talk about joys of fertility.
