100% in support of this - there should NEVER have been any confusion:
Trans women (MTF) benefit from male genetics - even if they undergo gender "affirming" surgery (that is: even if their balls are cut-off!) - that is PATENTLY unfair to biological women. That it was allowed for 1 week, much less several years, is just unfair and, in my mind, unreasonable.
Mind you, I have no objection to trans women in the ladies bathroom - I'm under no illusion that women are going into the bathroom to show off their vaginas (or penises) to each other... its just a bathroom, and the idea of a 2nd one for women is a "first world problem". 99% of women's restrooms in the 1st world have individual stalls that give each person a significant level of privacy. (99% of women's restrooms OUTSIDE the 1st world are just holes in the ground and are already shared with men 😉 ).
That said, I draw the line when it comes to locker-rooms - where people are undressing & bathing. If you've HAD the surgery, and can pass for a female (albeit with surgical scarring) - when totally naked, then we can talk... but if you've still got a penis, you do not (perhaps yet) have the right to be in a women's locker-room. If you're trans and are uncomfortable in the "other" lockerroom, please ask for separate accommodations (usually, 1 or more coach's offices are in the same locations).
COMMON SENSE if you ask me!