Tesla build quality is dogshit and their EVs are worse than the offerings from traditional car companies. Their output is worse, google about the bumpers falling off in the rain. He bought Twitter for a ludicrous amount, rebranded to something no-one except him cares about, reinstated all the stuff that is cancer to advertisers and said 'fuck them' then cried when they left his platform.
Aformentioned hyperloop being crap. Paypal he was twice ousted from the board for being shit and only when he fucked off was it sold for a profit.
He is a guy born into wealth who has landed on his feet, now cultivating his image as a genius to people who don't understand what he is talking about. He delegates the real work to cleverer subordinates and takes the credit (see taking everyone else's name off the Neuralink research).
I wouldn't trust him to wire a plug.