Look, just phrasing any of this in terms of 'biological males' indicates his knowledge of the transgender rights movement is very outdated (use the term Assigned Male at Birth! gender isn't biological and sex doesn't work like that!) or he's using explicitly transphobic terminology. Either way, it reflects that he holds a position that trans people and their advocates are 100% in the right to revoke support over. AOC will always take any opportunity to attack the Greens, she's an opportunist. That doesn't mean that what he said is acceptable.