Why are you laughing?
I can't believe that anyone would think less of a person who would choose to go to AirTran. I'm certain that he was fed up with the anti-american attitude, lack of respect, and poor training. Things may change here over the long haul, but most people want to keep their dignity when they go to work. I'm certain the culture at AirTran is what this person would prefer. Who care what airframe a person flies, there is more to life than the weight of your aircraft.
Good luck to all those that seek to take another direction. For many, the expectation they came with did not materialize. aka...bait and switch.