I don't really agree with that. His novel Galveston is quite good. But yeah, he had no experience in television and HBO gave him a big budget 1hr drama.
Hell, the two showrunners of Game of Thrones had no experience running a TV show and HBO have them a 60 million dollar first season.
I thought he worked on the Killing?
He must've had a ton of help writing last year...this season has been pretty terrible.