We always blame the player, but you really have to wonder about the organization's role, from management to head coaches to strength and conditioning to game plans.
I mean sometimes it's one of those WTF picks like the 2nd rounder on a kicker. But quite often, the Jets are drafting guys who are highly-rated on many draft boards. They're some of the most talented players available. And then they turn into pumpkins.
Milliner was projected as the #1 corner in his draft class and easily worth a mid to high 1st-round pick. If the Jets didn't draft him, some other team in the top 15 gladly would have. Ditto Coples, who was the top DE on a lot of draft boards. Kyle Wilson was projected as a 1st rounder and a top-3 cornerback in his class. Gholston was projected as a top-10 pick.
Yeah, you can argue a great player will be great no matter what. But maybe the difference between a good player and a useless one comes down to coaches and systems and whatnot. Even a great talent like Revis can be affected, like his useless year in Tampa.
For guys without passion, putting them on a frat-house style team like the Jets is probably a terrible combination. They need a schedule, they need veterans, they need structure. Look at the way the Cowboys have babysat Dez. For a few years, it was very very very dicey. He's grown up quite a bit lately though, and it took a lot of hand holding to get there. They had extra security and extra people to follow him and help him. I doubt the Jets put that much thought into anything.