Don't like her writing.
Fair enough, but no reason to dislike her personally.
Didn't like Harry Potter books and think that she's overly praised for them.
See above. And direct the criticism to the people doing the actual thing you dislike, ie overpraising her. That's not her doing.
Seems patronising when she speaks.
Ok. Entirely subjective. No need to watch. Not a moral issue.
Seems like she thinks she's better than everyone.
Unless one says why, this is pretty meaningless.
Just bugs me.
Again, subjective and not a moral issue. And again, if you can't explain why, it's possible the fault isn't with her.
She just seems odd and I can't put my finger on why I dislike her
As before. I wouldn't expect someone who could conceive of plots and worlds as wildly imaginative, detailed and well laid as Harry Potter to come across as completely on an ordinary wavelength. Her brain is exceptional.
Don't get what all the fuss is about, there are so many much much better authors who don't get anywhere near as much praise, from equally as working-class backgrounds
See first and second points. Not her doing.
Of the few points here that are based in stuff she's done, and not things other people have done (eg overpraising), they're all subjective and mostly based in things people can't define or explain. That doesn't mean they haven't got a right to feel that way, but in my experience, a strong dislike that you can't actually explain when asked usually points elsewhere. I'm sure we would all agree that even if she does come across as odd or patronising, that's no reason for threats of pipebombs and rape by cactus. So if there is a thread about that problem, and someone finds it more important to pipe up that they wouldn't choose to have a beer with her, it's possibly a sign of priorities gone a bit awry.