Why not? That's the point of alternate universes.
With stuff like this, I simply ask: Does this affect your game? If the answer is no, which playersexual falls under, then why worry about it? It won't affect your game, so who cares?
So since we are going to have multiple universes with characters having different traits in each one, why even bother making characters at all? Why not just have a bunch of tranquil companions?
I'm not worried about it "affecting my game", its the trend I find troubling, players shouldn't feel entitled to romances with their favorite characters.
Ex. I like traynor, but I don't want her to be romance-able by anyone and everyone in alternate universes, I want a character in my universe who is consistent. Should my FemShep and her match up all power to them, I have no issues with that, but I don't want an alternate universe where Traynor is a lesbian with the exception of Shepard, it seems like sloppy writing and pandering