It’s incredibly generous that transwomen have suddenly shifted their focus to the GNC butch lesbians they used to view as transmen in denial, but I think the answer to this usually needs to be “thanks for your concern but what goes on in women’s toilets isn’t transwomen’s job to solve - we’ll work it out, thanks”.
Where there are unisex toilets as a third space, these butch lesbians who are apparently begging for mixed sex spaces could use those, and since women’s toilets should be single-sex going forward, the instances of butch lesbians being asked to leave should abate, as the presumption will be that they are female, because we know that men who identify as women aren’t allowed in anymore.
If trans people really want to help butch lesbians, they should (1) stop using them as pawns in arguments and (2) stop pushing the notion that TWAW and TMAM - it’s the fact these people believe that appearance changes their underlying sex that has caused all the consternation with toilets in the first place. Women wouldn’t be feeling the need to defend their single-sex spaces from people who look male in the loos if it weren’t the case that thousands of people seem to believe that you can dress like a butch lesbian and literally become a biological man. Once the law is enforced and it becomes culturally established that biological sex is distinct from gender identity, it will be more likely that we are encountering a GNC female than a man trying his luck anyway.
Furthermore, since the majority of women’s spaces have been (wrongly) operating of the basis of self-ID for the past decade, if transwomen are saying that there is already plenty of evidence that GNC women are getting harassed, then it’s obvious that allowing transwomen in too won’t solve the problem, as it hasn’t solved it in the past ten years and clearly doesn’t work as a strategy.
Also, letting whoever says they’re a woman into a women’s space, puts all women at higher risk, including GNC women. It merely removes women’s right to speak up and eject a man who might be a genuine risk to them in that space. This argument is essentially that women should be groomed to accept a higher risk by ignoring people who might be potentially dangerous to them. Any transwomen who thinks this is a desirable outcome clearly does not think like a woman, and clearly has zero understanding of how women experience the world.
Sometimes in society, one’s appearance or behaviour can confuse others. Women who don’t conform might have to explain themselves more often than those who do, just as anyone who looks different for any reason might encounter questions as people try to understand how to categorise that person. As a society, we have to balance everyone’s rights and needs as best we can. And given the choice between a few women shouting at them or being assaulted by a male in a women-only space, in the majority of cases, I think the former would probably be preferable to most GNC women.