That's the whole problem. Once it becomes acceptable for men to go into women's facilities, this ENORMOUS loophole has opened up for the Saviles of this world. 'Oh, dear me no, I wasn't letching at the young girl, I'm trans/queer/identify as gender neutral' or whatever and bingo, 'Oh, there you go, sir, er, I mean madam, er, yes, whatever...' <holds open door to female changing room>
People who can't see this either have tunnel vision or are stupid or are naive.
As a poster said the other day, how can you tell the perverts apart from the 'real trans'? You can't. So how many scared or abused or actually raped young girls are an acceptable level of fallout to keep a handful of men happy?
But here we are. Being kind and polite has helped to land us here.