I think Elon Musk knows…
I think Elon Musk knows everything he is doing, the reasons and consequences of what he is doing and has done. Regarding the charging stations and related mechanisms, they need no more technical advancement to what they are now, and what he needs is to keep producing the same products on as deemed necessary. It only need to manufacture those devices (rather simple tasks) and deliver to where needed, and that takes only few low-level workers. same goes to Tesla car manufacturing. The Giga factories everywhere are all pretty much automated and for the new models that need special designers and engineers are, I am sure Musk has in hand, and as Sandy Munro said Musk need no more managers to run dealerships as they are more or less saturated in US network.