I get the sense she has such a strong sense that her judgement is right (which it is) that she knows in the longer term her reputation will only benefit from her current stand even if there is a period of people hating her first. She will be remembered for her courage and decency over and above HP, I think, because she has been really brave.
I think JKR has taken a really principled position on this, and seems to be a money-where-her-mouth-is person as well - but I will say that my sense of her previously was that she was herself very much inclined to be woke, in the sense of othering and really disparaging, bordering on cancelling, viewpoints that she didn't agree with.
I've wondered if this whole experiences has made her look at all of that differently. Not that she owes me an explanation, but I do find myself wondering. There are people and activists who disagree with silencing on issues like this but don't seem to get the problem with it in other areas - for them it's all about the fact that in this instance, they are right.
My gut feeling is that she's insightful enough to see that but I'd be interested to hear her talk about it.