Earlier quoted context omitted.
Of course what Musk does matters. He's the CEO. And his erratic and reprehensible behaviour is degrading the Tesla brand as well as reaffirming the long held idea amongst shareholders that he is too unstable to be running the company.
There would be no Tesla brand without him. The brand is quite literally "We are building electric cars, get the fuck out of our way!" so I think it's pretty on brand for him to be saying what he's saying. The man demands action, if he didn't he wouldn't be running the most ambitious companies on the planet.
> Founded as Tesla Motors, Tesla was incorporated on July 1, 2003 by Martin Eberhard and Marc Tarpenning.