The best kernel hacker is not the best manager for people - which the CEO very much is.
Or are you staying the best kernel hacker does not necessarily make someone the best manager.
I disagree with the former but agree with the latter. But I also want to add that the best leader for a technology company like Microsoft is not just some guy with an MBA but someone with both deep technical expertise and management/business experience.
The CEO's of Intel, Nvidia, and AMD are all engineers by training.
It feels wrong to me. In fact, I would argue that in tech the opposite is true. Go watch 'Downfall',the documentary on Netflix about Boeing and what happened when they dropped their engineering ethos and let in the "people persons" there.