OK, so to come back to a previous point.
Earlier you suggested that we could have different spaces for:
- everyone
- biological women
- biological women + trans people
- trans people
- biological men
- biological men + trans people
Presumably this is your solution for how society can be inclusive of both trans people and women who need single sex spaces.
Fine, great.
However, how do you see this working in practice?
That's already six different categories and it doesn't even include accessible spaces.
When it comes to spaces which are segregated according to sex, we currently have "male", "female" and "accessible", which is usually a unisex, single user space. This setup is already inclusive of everyone, because everyone is either male or female, and the only people who actually cannot use the male or female spaces are people who need accessible spaces. If we accept that able bodied trans people cannot use the spaces for members of their own sex, and that they should not use accessible spaces, the obvious solution appears to be to create some additional single user spaces, similar to the accessible spaces but without needing to be set up for people with mobility issues.
Why do we also need "women + trans people" and "men + trans people"? As far as I can tell this would just be taking floor space away from facilities most people are happy to use and dedicating it to a much smaller group, for no apparent reason. The result, as ever, would be less toilet and changing room provision for women, who are already under catered for.
When it comes to groups and associations, the need for single sex provision is less evident. Rape crisis group? Yes, I can see the need. Knitting club? Not so much. Organisations such as the WI and Girl Guides? Tricky.
For rape crisis groups, it seems to me that it would be relatively simple to organise separate groups for women, men and trans people.
For organisations such as the WI and the Girl Guides, I think you can make arguments both for and against such single sex groups existing. But what is clear to me is that if a woman or girl has gone out of her way to join a female only group, despite the plethora of mixed sex alternatives, it is because she specifically wants a male-free environment. Making that group "women + trans" is going to defeat the point of it existing for many of those women and girls.
I'm sure there are trans only groups in addition to the many LGBTQ+ groups we know exist. Nobody has an issue with that.
But if trans people who were born male want to socialise with women, why can't they do so in a mixed sex group? Why can't they join their local am dram society or pub quiz team? They do not need to join female only organisations in order to socialise with women.