Have you actually played any games with large chinese populations? Thewy can make a game intolerable. Anything with publicbvoice chat gets spammed with "China #1". The vast majority of gold farms in mmos are Chinese. Cheating is rampant, especially in any game with a real money trading system where you can buy items off other players. I've quit games before because they suddenly got popular in China.
That's not to say all chinese are like that, but a certain number of them make abusiness of games and wreck any sort of balanced economy. A certain number of them decide to take any communications path as a valid stste propaganda path.
Then you have the sketchy corporate influences like Tencent which are going around and buying chunks or wholesale well loved and successful game companies and making changes often, and occasionally outright ruining them.
I don't think anyone complains if a chinese gamer comes in and plays by the rules. Or only the true racists will. But it's not racism if you're observing bad behavior and it happens to mostly come out of one country.
But that is the thing. That is like saying everyone in the US are racist german nazis, because of a bad "few". When in reality the majority voted against that. I've been in games where the server was dominated by US players, and they were the worst communities I've ever been a part of (Age of Conan is the big example). Does that mean ALL US players are like that or even the majority? No. Its just those people.
I've been in games with brazilian players and I made the best friends in those games and at least in WoW, they get treated extremely badly because of where they are from. But I've also made great friends on US, european, australian servers.
I know you said they aren't ALL like that, but its the people labeling ALL of them like that is a problem or even saying its the majority. The bad few shouldn't mean the majority/all are like what you described. Otherwise anyone can say that about many gaming communities.
Another example is the countless scam and spam emails/phone calls I get with US phone numbers (so I assume they are from the US even though they can spoof numbers). Does that mean the majority in the US are scammers or/and spammers? No, even though that is the vast majority of phone calls I get is just annoying spam stuff.
China is a very large populated country, so there is going to be "more" people of not as nice qualities, because of such a large population. But from my own experience, I've met many great friends on Chinese, Brazilian, Australian and many from various European countries.
But what I was mostly referring to is the people who refuse to even play with players from other countries, just based on the country they are from. Saying terrible things about the entire/majority population because of a bad few. That to me is racist 101, labeling a majority population because of a few bad apples so to speak. That is what is going on with the anti-refugees as well and anti-migrants, but that is another discussion, but it is another example of what I mean.