For what it's worth, I'm pretty sure Diesel has met a few fighter pilots. It's not a monolithic culture--there are plenty of pilots out there who are exactly as you describe, but also a number who not only can explain why a thing is engineered a certain way, but actually did some of that engineering themselves. Even if they're playing supporting roles in flight test and weapons development, they absolutely take the lead in tactics development/refinement, which is intimately tied to current knowledge about both friendly and enemy systems and tactics.

Besides, believe it or not, some of them are huge nerds...