[TMWNN]

Musk is, and remains, both CEO and chief engineer of SpaceX. According to Isaacson's biography, Musk is the person who suggested and, against considerable opposition from his engineers, insisted on Starship switching to stainless steel instead of carbon fiber.

[ceejayoz]

Musk is also spread very thinly across several large companies (SpaceX, Tesla, Twitter), a number of smaller ventures, and shitposting on Twitter.

As a part-time CEO, he probably deserves part-time credit.

(I am 100% a SpaceX fan, personally. Whatever it is that has made it work.)