It's like any other fandom. I enjoy it, YMMV. I haven't watched yet but I am on book 4.

The biggest problem for me, at the start, was the enormous cast. Once I sorted out who was who I was okay.

Luckily there's a list by family/house at the back of each book.

Ah I'm looking for my next show to play catch up with after Hannibal.

And this has reportedly been so good that people have sworn blood grudges against those who report spoilers.

Although the books could be cool ... I really need to read more then I do.