This had nothing to do with VCS (which they obviously use), and everything to do with musk’s ego.
2. Printing that much code makes it easier for him to read?
(Not trying to attack you or your post, to be clear)
I have no difficulty believing that he wants to waste a bunch of time leafing through random snippets of code for some bizarre reason.
Makes no sense.
He was never going to read the code (or even really understand it), it's just pettiness from a petty person.