This is so stupid. How would they even enforce it? Are they going to check everyone’s chromosomes at each meeting?
Lots of trans women pass, and lots of cis lesbians can look a bit manly, so I can’t imagine any practical way to enforce it. And a rule without enforcement is pointless.
How do you know if a trans woman is passing? You probably only notice the ones that don’t.
Because they never do. Males and females are biologically and physically different, and humans have become exceptionally good at telling the difference because it used to often be the difference between life and death.