Actually only one of the top 20 or so comments are in relation to that whole fiasco. And that trend generally continues. All the whole "Russia=Nazi" comments have been pushed down by legitimate criticisms.
While you are right about the criticism, I hope you don't believe metacritic is so low just because of that vast minority(I bet about 1-3%).
There was a whole month where butthurt stalin worshipers in denial spammed negative metacritic after seeing youtube troll video.
These top twenty constructive comments are quite likely the only people who did played the game and placed the negative score. All others, butthurt russians.