I still don't think it's quite fair, though. Which hand you use to eat your chicken is trivial in comparison to what gender or sex you are, in terms of identity. And the more fundamental something is, the more sense it makes for it to make a difference in moral behavior. (Which is why we view religious affiliation as more serious, and more worthy of protection, than sports affiliation; language as more important than keyboard setup; and so on.) Doesn't necessarily mean it does actually make a moral difference in any particular, but it seems like it could more easily -- which makes comparisons somewhat problematic.