If a DM does a great job he ain't the one telling the story
More playercentric propaganda. There is no magic formula between the players and the GM and people can have just as much fun in a game where the GM tells the story and calls the shots... As they can with a completely player run story where the GM only acts as a distant arbiter.
A DM does a great job if everyone, including the DM, is having fun (Unless it is a paid DM I guess... they don't have to have fun)