I wondered what those holes were!!! [naive emoticon]
Do you not think that making toilets unisex would stop that? No longer all male, but a place where your mum, sister or daughter might walk in...
However, those men who are a danger to women (am being very careful to put it like that cos the vast, vast majority of men are decent people who would piss and go!) would hide in these unisex toilets and wait for their chance! - but such kind of men do that anyway, in other places. but it would happen. unisex toilets - would they be as safe as the late night bus, or the deserted train carridge?
OTOH, someone can walk into a female loo with bad intentions. There's no armed guard. But, it does give you a feeling of safety. Maybe a false one if you think about it. But it's a consideration.
Then another thing is the decent enough bloke (or woman!) who gets tempted to have a peek just because he (or she!) can. how acceptable is that?
Then there's the STENCH!! Feck me, you can smell a men's bog a mile off
However, since public loos are as rare as hens teeth anyway, none of it really matters cos we're all pissing behind bushes these days!!