1. They haven’t actually apologised for anything. She’s pre-emptively rejecting an apology that they have no intention of giving.
2. Daniel Radcliffe and Emma Watson are extremely well-liked. A lot of people are more attached to them in their roles as they are to the actual characters in the books.
What does JK Rowling gain by coming out with this?
I know it’s not hard to point out reactionaries hypocrisy when it comes to like safe spaces or hug boxes or whatever but genuinely how much of an echo chamber do you have to exist in for you to think this is a reasonable thing to say