Second:
Rowling doesn't typically go after random trans people unless you are brought to her attention. Might she? Yes. Absolutely, but as a general rule she'd have to _find you_ first and she gets so many interactions in a day that it's usually some lieutenant or henchman that brings you to her attention… and if that is true blocking her does no good.
So you aren't adding anything useful _and_ you aren't providing much protection.
3/