Well we could do the whole dance in miniature
They just want to pee!
Yes. So do women who can't do mixed sex spaces.
Vulnerable men!
Yes. Gay ones. Disabled ones. Young ones. Are they all coming in the women's?
But dignity, privacy!
Yes. Women who need single sex spaces need that too. What do we do with them when the women who feel savourish towards a particular group of men have made those women excluded from facilities and resources?
Mixed sex spaces are othering
Now we're getting to it. So it isn't about peeing or access - because other vulnerable people and people with opposite sex carers etc would benefit too - although there's a MNetter with strong research about the much lower safety of these necessarily single use enclosed rooms they're still in some cases a better provision and at least the choice/dignity requested.
So the actual issue after all this, ends up being, a man who identifies as a woman is deeply hurt and invalidated that a facility exists for biological women that he cannot enter, because this confirms that a man with a trans identity is not a real, actual woman.
And that is something that sadly, hopefully with support, he is going to have to learn to cope with.
He cannot trump the needs of women, because obvious sexism and equality. (Although plenty will argue that men just are more valuable than women, and women have no business saying no to men, particularly about their bodies. Hence why marital rape went on into the 90s.)
Those women have the same needs he does.
And women and gay legal protections in law cannot exist unless sex means sex.
So the only option to help and respect those people with gender identities is additional services and provision.
<Mega mix now follows>