bet every woman in prison would have been delighted to have a sign on the door not letting anyone else in while they were in the shower.
I can't imagine any woman would say it was against their human rights to shower alone.
Exactly. It's exactly the same as what happened, in a different scenario with 17 year old Lila Perry when schoolgirls, many younger teenagers, objected to the presence of a male in the female changing room. That one didn't want the privacy either, and demanded to be treated exactly the same as the girls.
This is what transactivism means, there are only some "human rights" that are important, and people are so little concerned for the feelings and wishes of women and girls that they are basically irrelevant.