Well, yeah, she has a right to free expression.
We have the right to ostracise her and anyone espousing the kind of bigotry she expresses. That's up to and including HBO or it's affiliates
But, separate from that, her involvement is a disappointment on quality level. As much as I love the books and goddess movies, the woman is a mid tier writer. Which is still better than most people, but if she's influencing production decisions along her established works, then the new stuff will be just as flawed as the old because she's run out of new ideas and is coasting. She's neither necessary nor useful to a series based on an established set of books