It astounds me how so many people can have such strong opinions about systems they have so little experience with.
I've lived long term in 4 countries (Canada, USA, Japan, Germany) and have dealt extensively with the medical systems in all of them (plus some experiences in Portugal and France).
Every system has its warts, and this is the first thing that naysayers will latch onto, of course. People love to use tu-quoque as a defense mechanism. "See? They're just as bad as we are because you have to wait sometimes, and look at this extreme case right here! It's probably even WORSE than us!"
The fact is, none of the systems are really that bad (with the EXCEPTION of the American system). There's a reason why travel insurance companies have two tiers: All of the world EXCEPT America, and all of the world INCLUDING America.
Have I had to wait for a procedure in Canada? Sure, but they do a pretty decent job of triaging, so yeah outside of the HORROR STORIES (of which you can find anywhere if you dig enough), it's pretty damn good. In Japan I paid a percentage of costs (which are pretty damn reasonable). In France I actually didn't have insurance, so I had to pay FULL price when I came down with pneumonia: 50 euros for the doctor and the antibiotics. In Portugal, I caught COVID, and got treatment within 2 hours of arriving at the hospital in Lisbon.
If you haven't actually been in the medical system of another country, you don't know what you're talking about.