Even in China you’re looking at 6% of income. Of course taxes aren’t evenly distributed, but 90k means enough income to be worth taxing without the political power to offload the tax burden on others.
You’re misunderstanding what the issues with US healthcare are.
I’ve had significant medical issues in the US and received truly excellent care without significant out of pocket costs, the same is true for many of my friends and family. There’s a reason there’s significant medical tourism to the US and from the US. However on population wide measures like life expectancy you’re better off providing basic care for 100% of the population than world class care for 40%.
There’s also major underlying issues like decades of obesity and ignorance around ‘alternative medicine’, vaccines, etc.
Unlike getting anything more serious than a cold in an idiotic, backward country without public health care.