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.
Yes, if they are attracted to people of the same sex.
Lesbian is a term based on biological sex. “Gender identity” has nothing to do with it. Males cannot ever be lesbians., by definition.
Edit: would love for any of the downvoters who disagree to point out to me where same sex attraction suddenly became about “gender identity” instead lol