Personally, I think the world would be a much better place if gender barriers were removed entirely but I think your mask has slipped a little here:
What is that AnyOld Prion is masking in your opinion?
In your opinion, transitioned males are women, but that is not everyone's opinion and you cannot police people's opinion to suit your own belief.
Allowing a trans woman to use a female toilet isn't allowing a man to use it - it's allowing a woman to use it.
It is allowing a male to use it. And in fact, women can state that they find male's in female single sex spaces to be distressing without it being categorised as transphobia. You might not like this, but it is the truth and even the EHRC has stated that women can discuss and highlight areas where conflicts in rights of both groups arise.
There is a reason male's are segregated from female single sex spaces and partly it is reflected in crime statistics. Crime statistics that if they start to be entangled by inclusion of males in female statistics will lead to many inaccuracies and false policy changes. And will be impossible to disentangle.
I get it. It is infuriating that women disagree with you.