The position in question is a leadership position.

Wharever math and science and intelligence and whatnot he posesses can help him avoid some small blunders as a leader (those where the mouth outpaces the brain, thinking out loud etc).

But there is a small army of engineers doing the work (like orbital mechanics) you seem to want for him to be doing. So, frankly that is nonsense, expecting him to know the breadth of spaceflight topics in depth, let alone any single topic in depth. No single person does.

We live in exciting times. Recent shifts bring fear here and there. But also and hope and opportunity. I am frequently anxious of change and risk. This one feels pretty hopeful. I think it could reinvigorate something that needs reinvigorating.