Yes, this was what I was thinking of. What is it about transwomen, in particular, that means they can't be expected to obey the rules? Why is behaving appropriately so difficult for them? Outwith the trans/gender crowd, most men do behave decently and obey social rules. The ones who don't are the men everyone — men as well as women — avoid where possible. They are not safe to be around because they display no social responsibility, just as people who habitually and gratuitously break the speed limit are drivers that most people disapprove of and avoid. Why are transwomen the antisocial boy racers of the gender world?
In particular, why can't trans-identified males behave with decency towards the sex they wish to emulate? Why do so many of them appear to hold women in contempt?
This is rhetorical because of course we all know the reasons: Men's Rights Activism, Malaga, porn, fetishism, misogyny. But it's a useful way to reframe the argument. No problem with the way you dress, sir, but why are you so determined to disobey the rules (and the law) in order to access women's loos and changing rooms? What were you ever doing, thinking it was okay for you to be there in the first place? Why are you behaving in such an anti-social manner?