Making up problems to, hopefully, accelerate the upgrade seems a stretch, Fatbus.
Guys complaining because their upgrade is taking longer than they would like has zero impact on my stay/go mindset. Maybe that is just me, though.
Certainly doesn't explain the FOs leaving. Especially the ones that are in the upgrade window now.
Knowing you're leaving and your financial future is secure must make these issues less serious to you. If one is considering their longer term career, however, they take on more significance.