I'm sure he wouldn't answer, but he's given enough of an answer on this already. The books are the books and the show is the show. They may have similarities, they may differ. Additionally the show has limitations that the book doesn't. Actors age. Actors want to move on to new roles. Production has a budget.

I'm sure George has plenty of feedback for Benioff & Weiss. But also, literally everyone has feedback for them. They made some obvious and glaring mistakes.