1. Men don't need to pretend to be transwomen in order to hurt women. They are quite capable of doing it as men. If a man wants to walk into a ladie's room and rape a woman, he doesn't need to put on a costume to do it. The spectre of men passing as women in order to harm women is a trumped up boogieman that doesn't exist.
2. I didn't say children should make transition decisions themselves. I said their parents know better than strangers what's best for their child.
3. I agree that people shouldn't be harassed on social media. By calling me authoritarian and implying I'm stupid you are engaging in the behavior you say is wrong.
4. I am from the U.S. and unfamiliar with the U.K. law. If JKR writes a blog about it, I'll respond to that. But this wasn't that.