This is an interesting Reddit thread where members of the trans community write about how they feel about not using wrong-sex bathrooms toilets facilities. (The original question doesn’t say toilets, but that’s how most responders have interpreted it, I think).
https://tinyurl.com/musmm897
There’s a mix of responses, some activist, some self-pitying, some stories that are sad. Genuinely useful and thought-provoking to read what people say.
I can’t very much influence how people should post here, but it would be very easy to only to highlight or mock the more unreasonable responses in that thread. Perhaps I’m allowed to ask Mumsnet posters to be thoughtful, though?