Earlier quoted context omitted.
Public health care doesn't mean that nobody pays for it. Since he's not employed by anyone else, it's part of the ~15% in mandatory fees that he'll end up paying in addition to the ordinary income tax.
1) The grandparent argument that being employed would be great because of health care benefits assumes that the creator of Minecraft lives in the US. If he had bothered to read the first sentence of the actual article, he would have discovered that this is not the case. In this place, we read the articles before commenting. 2) What 15% fees? Health care in Sweden is financed through regional income tax.
But looking again, he's in fact born before 1983, which means that he has to pay pension contributions as well, bumping the total contribution up to nearly 30%. In addition to income tax, that is.