Hermione apparently also being black canonically makes Joanne mocking her being an abolitionist even more bigoted.

Hermione is literally described as having white skin in the books. This was just a cynical retcon. Either way it’s fucked up.

Rita Seeker is obviously trans coded and her character is centered around being deceptive, conniving, and predatory.

For real? This is one I’d never caught. Then again, RK seems to describe every single woman she doesn’t like as having “mannish” hands