YANBU because JK Rowling said nothing that could be deemed insulting, "phobic" or threatening. She simply defended a woman's right to free speech. I looked through some of the replies to her tweet and some were way over the line - threats, cursing, and over and over again telling her to shut up. Nowhere did I see any valid or cogent arguments against her position - only poison and narcissistic rage.
We are sick of being told to shut up. Women have valid concerns and we want to talk about them. That is not bigotry, it is a normal part of a democratic society where the needs of one group need to be balanced against the needs of another group. When respectful debate is shut down, it does not lead to good things.
It is worth pointing out that had Maya won, it would have established a legal precedent of protection for people on BOTH sides of the debate - a belief in innate gender identity and a lack of that belief. I don't see any winners here.
Thank you JK Rowling. I hope you know how much you are appreciated by so many.