That's a pretty innacurate assessment of Rowling, as much as I dislike her.

There's this whole thing people do whenever we watch someone fall from grace, scrutinizing their past through the bias of the present to find "clues," so we can better avoid people like that in the future.

But JK was and still is fairly progressive. A number of people close to her have said her opinions on trans people were, in part, radicalized as a result the fame that exposed her to vitriolic opposition.

I want to be very clear there is no excuse for what she's done or said about trans people, only that it's innacurate to say her shitty views came in a package deal and have always been the same.