I dunno if I agree with the Mass Effect assertion. That one gay crew member in Mass Effect 3 (I forget the names of most NPCs in that game) seemed like a pretty well-rounded guy. I actually didn't realize he was gay until he came out and said it. Maybe people are thinking not enough attention was given to that detail, but then how much is too much? If you don't focus on a character's "gay" side at all outside a mention it's apparently a token character, but if you focus on it too much then he's a stereotype.
Come to think of it, Borderlands 2 had a lot of gay/lesbian minor characters, didn't it?