I'm not, just like i assume you dont support the OP for speaking on behalf of all LGBT because they definitely dont speak on my behalf as a gay man.
You're right, perhaps all villains should be white men that way we can all metaphorically fight the "patriarchy" like the "feminists" we should all be? We dont need white knighting, we're strong people and capable of expressing and talking as equals, we dont need to cry to developer or the public about our problems, we're above that.
Your analogy reeks of bullshit, just like it's bullshit to assume that fighting americans in a videogame will make me target americans as enemies, or russians, or any ethnicity. You're no different than media outlets that say grand theft auto makes us gunman.
As for heroic playable gay men? what about gordon freeman, master cheif, noble 6, commander shepherd, or any other character where the player is left to define his sexuality how they see fit?
I don't need sexuality stuffed in my face to project my homosexual tendencies on my characters, I don't need to be told the character that I play is gay, it's only when the opposite is happening that we should really complain. If they tell us a character is straight, then we should ask, "where is the gay version", that when we should be making these threads, not because the developer is looking to make a strong gay male figure in a leading role in a game.