The thing is, where would Rowling flee? A blue US state? She might get in the same trouble over hate speech laws, would complain about the same troon problems, and might have to fight for the right to offend troons to the Supreme Court. A troon might also off her.

That's a little overstated. The 1A is still real enough to crush misgendering laws here, and while the threat to her life shouldn't be ignored, it's probably the same in Scotland. I know NYC and some other jurisdictions supposedly fine you for misgendering, but I've never heard of someone prosecuted for it yet.