With Tesla, Musk invested in a neat startup, where the original founders didn't have the right skills to make it work and/or it was too soon for the tech, Musk managed to get the right talent in to turn the loss-maker and laughing stock into a decent middling output car company. That's fantastic! But it also isn't what Tesla is seen as by those who idolise Musk: he didn't make everything out of it; and even with all the talent, he found he got lucky that battery tech advanced as fast as it did and made EVs viable when they did.
He did a great job building that company up, but is now ruining it with a series of really bad decisions and appears to operate more on hype than tangible progress nowadays.
Musk wants to be called founder and he's absolutely right, as he got in when there was still nothing. Not that I care, but if you want to criticise Musk there plenty of real stuff to do it. This one is at the level of "he inherited his money".
