The issue of changing rooms, toilets etc is mostly solvable by having Female, Male, and Unisex, facilities. "This doesn't appease the trans community because it provides no validation", but it is a practical solution. It doesn't solve the problems of males in women's prisons or domestic violence refuges, women's sports, or the change in language that is being demanded.
How do we tell the difference? How do we know the genuine transwomen from the men with a fetish for being in women's spaces? We can't tell, so we exclude all men from women's single seats spaces regardless of how they identify.
Many women and girls are uncomfortable changing or using the loo around male bodies, regardless of whether genitals are on show or not. These women and girls, including those in religious minorities who are prohibited by their faith from being uncovered around men, will self exclude from these spaces.
I'm no stranger to the concept of women being uncomfortable around men, either clothed or unclothed.
But that speaks to far wider issues than transwomen in changing spaces
We need to have better standards of behaviour being the norm in all our spaces , both public and private.
Respectful behaviour educated in from birth.
That will take a while I know, but many of us are totally done with the 'boys will be boys, it's just inevitable they will misbehave' schtick.
Having raised two boys to men, I've been very much invested in the how's and whys of raising 'good men' by all accounts it's turned out ok..
Bad behaviour on the part of men, isn't inevitable, it's just currently 'excused' expected or even 'glorified' in certain sections of our society right now.
Many women are afraid / uncomfortable around men for many justifiable reasons, and yes that's why we have 'safe spaces' .
But using a generalised 'fear' of men , or aversion to seeing willies, as a stick with which to beat transpeople is highly unjust .
I haven't experienced , nor do I agree with the "in quotes" part of you post (I haven't got bolded for some reason)
That's an over generalisation, in my view.
The problems that lead to women feeling the need for safespaces in the first place are far more systemic, than it just being that women don't want to see willies, it's the behaviour that can accompany the willy that's the problem.
Those need addressing
Anyway , I'm a fool for joining in.
And I'll leave it there..
Although I suppose talking about all this might make a few men consider why some women are just generally uncomfortable around men full stop...
And address that, for everyones sake.
Let's hope so eh??