but of course that doesn't mean Sweden pays more from those taxes on Healthcare than the US.

Looking at the "Government and compulsory" figures here https://data.oecd.org/healthres/health-spending.htm the US appears to be at $8407 per person for gov. + compulsory spending and Swedent is at $4606.

Healthcare gets funded in each country by a combination of taxes and people paying out of pocket. In the U.S. employer subsidized health care insurance should be viewed as part of an employee’s compensation. What matters in such discussions is not the tax rate but the overall spending per capita and how much it costs at point of contact. The relevant facts are that the U.S. spends far more per capita and costs far more at point of contact than every other OECD country.

I think the person you responded to was attempting to point out that Sweden’s healthcare costs come mostly from taxes and is cheap at point of contact. I don’t believe they meant to give the impression that taxes in the U.S. are higher than in Sweden.