The profiles I have seen of Jet Fighter pilots leave me with the impression there ALL arrogant. And yet you KNOW there the best of the best. At that level of performance and "risk" to your life you HAVE to be incredibly secure in your decision making. In your mind you ARE the best, bar none. No other pilot is as "good" as you.
I see that same trait in a lot of race car drivers too. A study showed the top race car drivers all have ONE thing in common. An extraordinary desire to "win", a firecely competitve spirit, far beyond what any reasonable person would consider "normal".
No doubt there are times when there pit crew are just fed up with those a holes.
Ernie