Still it is a trivial outcome and hence doesn't actually have any more weight then 2+2 = 4. Something is not significant just because it happens.

I would say the reason we see Nazi more often then Mongol is a matter of cultural familiarity. Name calling in itself is what normally shows that a debater is either out of ammunition or cool. Calling someone a Nazi is just plain rude so it a discussion is lost not because of the mentioning of Goose-stepping Hugo Boss wearing blonds its the insulting nature that is being used. I'm sure in different boards there will be key terms of pain. I'm sure is some boards the calling someone a commie would happen more often then calling them Nazis even if the intent to insult is the same.

Mind you I've always found the term lemonazi more funny then femnazi. But then I'm just bitter and twisted.