Had the same thought, and looking at the SEC guideline, it seems 13D is the comprehensive one to be used by default, and 13G can only be filed under specific circumstances.
At Elon’s level, it feels a lot more malicious than “oops, wrong form”
While Elon's not typing the forms on the SEC website, I can't imagine his attorneys deciding by themselves how and when they will file to the SEC, when there are further consequences down the line.
Elon has always been in hot waters with the SEC and should have all the attorneys in the world making sure all Is are doted and Ts crossed. I'd think we're in a reverse Hanlon's razor situation: don't assume incompetence when it can readily be assumed to be malice.
https://www.investor.gov/introduction-investing/investing-ba...