I think the problem is that there are a lot of practicing capitalists that also happen to be massive assholes. It's not the capitalism that's the problem, it's the asshole part.
It shouldn't be so taboo to discuss flaws in the capitalist system.. The article itself is a very raw exposition of a characteristic of it that I imagine is understood by people on both ends of the political alignment spectrum as a damaging thing, not that it couldn't not be.. I think the discussion matters because reality matters.