I have no issue with any of that. Skin color is something you can see whereas sexuality is not so it seems like a qualitative difference.
Equality of opportunity is a distinct issue. Whether trans actors are cast in trans roles is only half of that question. They should also have equal opportunity for being cast in non-trans roles, assuming they are actors and not just movie stars. Looking only at the former is not really a measure of that.
I don’t even know what “fair representation” means let alone how to measure it. But I’m pretty sure griping about not getting a part is not what that means. A casting director is unlikely to turn you down solely because of your gender preference, especially for a role involving gender differences.
