That’s debunked. The economy of scale will give us cheap treatments, and any society will be stupid(if not for altruistic reasons, for economical reasons) not curing their population.
If you must have a down spin on people not getting debilitating diseases until they eventually dies, think of how maybe we’ll have to work way longer than today ;-)
Well that’s dystopian. I think in the free world it will be a new era, or so I hope!