I don't know anything about this, but while I am generally sympathetic to game devs (and even fan translators and such) getting picked at by spoiled little shit gamers. If he did indeed decide to bash an entire genre/ethnicity of gaming like you claim, sounds like he's a hypocrite who should apologize.
But yeah, I really hate how entitled and over critical most "gamers" are towards games these days. I mean sure I have alot of criticism towards design choices and balancing too. But I NEVER EVER am the guy who is like "herp derp, these shitty bugs ruin the game, these guys aren't working hard enough, slackers don't know how to develop, blah blah". Those people should jump off a bridge, seriously.