You can be on the spectrum and still grow up a narcissist. Often aided by experiencing social rejection.

What you cant do is live as a narcissist on the spectrum and also be happy, instead it tends to make the ego worse in the typical rich persons disease. You can have everything, except what you need because you are to dissattached from- and actively suppressing, your internal needs.

Elon Musk needs to chill, hop into a pokemon onesie, get on some friendly Minecraft smp and embrace the fact that they are queer.