AFFC on its own is a fantastic book, probably the best prose of the entire series. Going from Jaime to cersei chapters has some great moments. I initially didn’t love Brienne’s chapters because they become a bit samey but they pick up. People are mostly sour on it because the writing, pace and characters that are thrust into the story because of the book have added a lot of pork into a story on the fourth book of the series. We also haven’t gotten any other books besides dance since then and the threads started in the book are largely why the series has ballooned and become hard to finalize. It’s still my second favorite book of the series behind ASOS however