What does "praising" mean? Being critical of what we learned in school about the USSR?

What does "communism" mean here? Advocating for the type of social democracy that's done pretty well in much of Europe?

I mean I know tankies "exist" but I rarely see them. Just because we're all critical of capitalism doesn't mean we're all dumb enough to want to re try what the soviet union did. It's almost like our kids will die under capitalism so we're willing to think outside the box for once.