The issue is VAT is astronomical compared to the US and hits the poor hardest because consumption taxes are regressive. If it were more apparent on on pricing how much was tax, I could see people who make that argument here having a point. I find it hard to believe Europeans would not blink at seeing such a regressive tax day after day.
You don't just pay regressive VAT, you also benefit from progressive income tax, progressive education and health policies, etc.
The US state and federal governments spend 1.5 trillion per year on Medicaid, Medicare, CHIP, and VA health care. The actual number is even higher than this by a fair margin because many US health systems are owned by local governments, and US government employee health spending isn’t accounted for either. With 330million US citizens, that means per capita US government health care spending is 4500. Most countries are able to fund their entire public health care systems with very similar per capita numbers; America doesn’t have universal public healthcare because the system is broken, not because it needs the money. So very high consumption taxes aren’t the reason Europe can afford good health policies - the American government already spends the same amount, and could stand to dramatically increase income taxes on high earners.