You don't hear the whining because you don't live in New Orleans nor do you converse with a wide array of Saints fans (guessing here, but why the hell would you be a Jet fan living in the Bayou). Also, how do fans impact the outcome of the organization unless the idiotic owner/GM/HC are listening to said fans about every move?
The fact is all fans are upset with their teams when their teams are under performing. Jets fans didn't mind much when we KNEW we sucked, too. It's a 180 when you have a brash HC who won't shut the fat hole in his face and delivers a 14-18 record over two seasons, all the while boasting about having the best this and the best that and promising to meet the President because they're winning the Super Bowl and sticking behind a QB telling the media and fans "he gives us the best chance to win" when he can't hit water if he fell out of a boat.
In closing, two completely different circumstances.