That said, I think Musk's move was colossally dumb. Tesla's valuation is based in large part on future expectations, and those expectations are deeply tied with Musk personally in a way that's true for very few other companies.
If Tesla were in the black and shipping lots of cars, he could have done this happily. But people have a lot of very reasonable concerns about Tesla. One of those concerns is that the CEO is getting erratic under pressure. Publicly dating and breaking up with a pop star. Spending his time shitposting on Twitter. Calling a hero of the Thai cave rescue a pedophile, and then doubling down on it. Announcing he was taking the company private and then changing his mind.
Given that, video of him smoking weed would have been foolish on its own. Doing that at the same time Tesla announced two executive resignations? Absurd. And given that one of those resignations was the Chief Accounting Officer leaving after 29 days? Plain dumb. It makes him look entirely irresponsible.
Is he being irresponsible with the business? Who knows. But Musk knows better than anybody how much of Tesla's valuation is based on his own very personalized PR efforts. He should go find a crisis communications consultant. And then listen to them.