Interesting post. I'd say that the distance of air warfare and that it is conducted in more isolated ones and twos than ground combat (especially infantry) means that it is both harder to inspire in the same way, and is less necessary. The words above aren't the right ones but air warfare is less "personal" (not the right word either - I am struggling here)
Personally as someone who used to wear a brown suit (peace time only), probably the most inspirational leader I knew was when I was in civvie street. Much as it pains me to admit it, he was RN!
Again the proximity to one another with which the RN go to war probably lends itself more to such things