As an Airbus captain (not at JetBlue) I fly with lots of great FOs and a few crappy ones. I find there is very little correlation between their experience and their performance. Almost none, really.

If my company had a program like this, I'd never give a graduate of the program a hard time... Unless they sucked.

It sounds to me like a lot of people here are just frustrated that somebody else might have an easier path to the airlines than they did.