It's not an uncommon attitude, to be honest. That if someone really goes the whole hog, then why not?
But the problem with that scenario is that it's wholly concentrating on the man, his validation, and his wants and needs. And completely disregards the women and girls. But not only that, it is quite happy to use them to validate that man.
You have to remember, it's not the actual women's space that is the focus. It's the women and girls in that space. The space is just four walls and a ceiling. If all the women left, and went to a different space, the focus would switch from the first space to the second space.
The presence of the women is crucial. It is their physical presence that provides the validation. Hence the complete lack of interest in a third, dedicated space.
Women are being used as a tool.
And in terms of how to tackle it, we need to get back to a culture that understands single sex means single sex. And the social stigma of violating that.
Part of the problem is that women and girls now feel unable to challenge a man, any man, in their space. We need to switch that back.
And upon challenge, if men fail to leave, then security or police need to take over.
Just like they did before.