And dare I mention that anyone who has ever done an ENI test (Professor Eysenck Neurological Inventory Test) will realise that whilst the military want pilots with a stable/extrovert profile, civil aviation would prefer their pilots to be of a stable/introvert style.
Of course, the latter are much more simple to control which is why modern airline management pillocks can get away with what they are doing.
It actually takes leadership to control stable/extroverts.