Three huge assumptions here -

"health system collapse" was the inevitable outcome of any other approach to dealing with Covid.

"health system collapse" is worse than all of the other present and future side-effects, including the effects of denying healthcare to huge numbers of people over the past 2.5 years.

"health system collapse" didn't happen anyway. At least where I am (UK), it's increasingly clear that our response to Covid has blown open all of the existing cracks, and it's hard to say that we "saved" the NHS.