*facepalms* The OP wasn't asking for an LGBT guild, just fellow LGBT players. There's no shame in asking to play alongside people you feel more comfortable being around. Yeah, it shouldn't matter, but with how often homophibic/transphobic slurs get thrown around in MMO general chats it's no wonder someone would want to avoid random players and ask to play with people in a similar walk of life.
So stop overreacting and let people play the game the way they want, as long as they're not hacking or cheating.