I can't understand the notion that the TV show is bad or ruins the books, simply because the plot differs from the plot of the books. I understand the want for the TV show to be an exact replica of the books, but these are two different mediums. The differences are inevitable.
The problem is there have been a lot of theories from the books and GRRM has never answered fans about them, so it gives the books a lot of mystery with what will happen next.
Since the TV show, there have been some major changes, and suddenly GRRM is talking about the mysteries the changes ruin and is just giving answers like "I always meant it like that".
Like hell he did, if he did he would have answered stuff years ago and he would just spill it al as the TV ruins them one by one, the TV show has pinned him in a corner, now there are storylines that if he wanted to pursue, he cant.