92% of Americans having health insurance doesn’t disprove the assertion that basic health issues can bankrupt you. Last I checked, medical bills were still the leading cause of bankruptcy in the USA.
That’s without mentioning the problems with insurance being tied to your employer. My definition of a “free country” includes being able to quit your job and not worrying about losing everything you own because you get sick.
I’m not saying your definition has to be the same. I’m just trying to explain one of the big reasons why I decided not to try to emigrate to the USA (and I’d wager it’s this exact sticking point for a lot of other people, too).