> Rowling is not exactly reticent about her opinions. If she hated Jews she'd have said so straight out.

Probably not, though. Most people, even bigots, understand that expressing outright antisemitism is socially unacceptable. Clearly we aren't there with transphobia yet, because she can say what she says and still have people defend her "right to her opinion."

Many people don't understand trans issues, and therefore see them as up for debate rather than being a human rights issue. I don't necessarily blame them for being ignorant considering the vast amount misinformation out there, but it does give JKR a lot more leeway to be openly transphobic compared to being openly antisemitic, racist, sexist, etc.

(Please note that I'm not debating whether or not she is antisemitic, I haven't examined the claims or the evidence either way. I am simply offering a counterpoint to the specific part of your comment that I quoted.)