GoT had rape, gang-rape, sadism, incest and all sorts of other things from the books. I don't see any 'complete betrayal' of the books. The medium is the message and GoT pushed a few limits for TV.
If you had read the books you'd know that GRRM despises violence, doesn't glorify it like the show.
I have read the books you dingbat. I read them before I saw the TV series. I fail to see how the TV series is glorifying the violence which is taken from the books.
