All managers spend a ton of time on people problems, and onboarding/training. But CTOs do or can do more; their technical judgements are a key part of the job. They don't have to get into the weeds, but they have to know the weeds and know who on their team knows most about which weeds.
Elon gets ridiculously far into the weeds, frequently; but admittedly that's rare. Jobs relied more on intuition and key tech people, but knew more about the weeds than he let on. I know, most employers wouldn't hire Elon or Jobs or let them do their thing. But again this guy ain't looking for just any perch.
I'm reminded of Sandy Munro roasting/comparing all the executives he worked under at Ford with Musk. It's absolutely true that this guy would be miserable with a standard CTO-type job at the old Ford. He doesn't want our help getting that job.