Unfair game is unfair game no matter what nation / race or skin color you are
The fact that the parent was objecting to every member of a group of people treating all members of another group of people similarly struck me quite strongly when reading it, separate from the discussion about differences in culture.
Its actually kind of funny that you accuse me of generalization, since every single chinese I have met in China referred to me as "Englishman" and wanted to take pictures with me because i had "jew hair"
I'm not weighing in on whether you're right or wrong, here, just remarking that you seemed to be demonstrating similar behaviors to those you were complaining about.
It's possible to stereotype or overgeneralize about cultures and people in ways that are not negative.
I'm also not (intentionally) suggesting that your observations of behavior are accurate or inaccurate, or that the relevant people weren't engaging in the same behavior, just that the grouping of a complaint about people overgeneralizing with defining of the people doing the grouping as members of a very large group was quite striking, to me.
Yes its possible to stereotype and overgeneralize in a positive way, I can say lot of positive things about China and the chinese, but not really when it comes to online gaming culture, sorry!
Its just a general problem with mixing regions like that, similar things could be said about russians in the EU region of CSGO etc..