The post you responded to pointed to a problem with capitalism, but it hardly follows that this means they'd advocate for communism. More rationally you might suppose that there is some other way to curb failures of capitalism without jumping to other extreme. It is a scale, yes, but there is no reason to expect the best solution is at either end.

Let alone the fact that we are only talking about economic freedom now, which is only one of many interacting facets of politics that can't really be isolated.