1 - YMMV, as I mentioned
2- as a consequence, popular distros like Ubuntu and Fedora too. I expect other GUI's and therefore distros to follow
3- Didn't mean to imply they don't, what I meant is that they have issues and will make users jump to other ships.
4, 5 and 6, Lutris and later Steam itself when I was running out of ideas, and yes it does run on Linux as long you can figure out the correct proton/wine version or buy the game from Steam. Point here was that gaming on Linux can be convenient or very annoying, depending on the games you want to play. YMMV
This is a trick question, the real answer is that there weren’t real communist countries