I agree that his basic point is correct. If you spend time in any subculture that has some sort of skill stratification, you will notice that most of the people at the top lack an ego. It's typically the people that are trying to reach the top step that do.
Yeah sure when you are on top but then there is the fall from grace. As you become less relevant or get superseded. That's when the ego comes out, tantrums, destructive behavior, etc.
