> apart from that: I (and many others nowadays) are OK with considering male to female trans as women. If you want to be a woman and act like a woman, I'll consider you a woman regardless of your biological sex.

I'm fine to let trans men into male spaces around me because that's my decision, as a man, to waive some of my rights temporarily.

But for us to declare that a man can be a woman is giving away women's rights, and that's not okay.