Well, there's at least one guy who believes in Van Gundy- the Rockets owners! There are a lot of coaches who are incompetent in this game and JVG is one of them. The reason they still have and get jobs is because the owners are dopes when it comes to basketball, and they listed to insider GM's that are unable to identify talent.
Every year, players get drafted above or below where they ought to go, based on what happens once they start playing. It seems pretty clear Billy King and Jim O'Brien did very well by selecting Andre Igoudala.