Correct me if I'm wrong, but I think males can compete in the female competition if they have taken puberty blockers and have not undergone male puberty.
These chappies (or girlies depending on your sleight of hand willingness) still don't have a female body, with all that entails. It's still not like against like.
Way better than before, but a female is not any version of a male. And, if it is to be protected, it should be a positive definition. Not simply male not gone through puberty and not testosterone level dependent.