Even female wards in hospital are not 100% female staffed. Male visitors are also allowed. They are not locked in, so always vulnerable anyway.
Safeguarding should be in place for the vulnerable, but that should be beyond crude sex segregation. Sex segregation is a measure, but it still doesn't fully protect women or the vulnerable, certainly not from men entering premises under other pretexts. More refined measures should be in place.
And in relation to those who have particular triggers, they should be accommodated. I just don't necessarily agree that everyone will have the same triggers. Although, I suppose "men" could be the most common trigger or source of unease. I didn't see how lesbians victims of female abuse could be safeguarded.
I agree that broad sex segregation is fine where people are most vulnerable, such as where they go naked or sleep.
I pointed out that I didn't find most toilets with cubicles or shop changing rooms places of particular vulnerability. Not exactly the same as swimming pool changing rooms, although some degree of mixing (not in shower areas) is not necessarily more dangerous.
At least in most places that I have been to.
TBH, if going to deserted toilets, a man could be hiding without anyone realising, or could enter after we go in, or could be well disguised. Regardless of any laws, I'd avoid deserted toilets anyway. Even if female only.
I pointed out that such laws could become a big problem for women who identify as men. And that screening those women dressed as men entering female toilets would lead to more confusion and upset for them, as well as increased worries and eventually paranoia about safety and "men" entering toilets.
I think such laws are worse than the current state where, as other pps pointed out, people go to the toilets where they feel more comfortable.
I would welcome gender neutral spaces, as well as more private spaces where vulnerable people could feel safer.
And I agree that dealing with transgenderism requires more thought and consideration than only considering full post-op or considering anyone who claims to be transgender.
This takes to another discussion about gender. I don't like "gender", as it implies that there are male-only or female-only characteristics. I would actually challenge a biological man who claims to feel like a woman because he likes wearing dresses, for example. But society keeps telling us that that is what defines a woman. Perhaps we should address that at the same time as making laws about who can or can not enter public toilets.