Tesla Shares Shaken by Accounting Chief’s Exit and Musk’s Pot Smoke

Ever since the bid to go private was abandoned, some investors have remained on edge as Mr. Musk continues to draw attention, often through impulsive outbursts on Twitter.

“It’s time for Tesla and Elon Musk to grow up,” Michelle Krebs, executive analyst at Autotrader, said Friday. “The company has problems, and it seems the board and investors need to start speaking up about how the company is being run. Maybe behaving like that is cool to some people but doing it while running the company with other people’s money is really not cool.”

A company spokesman, Dave Arnold, had no comment.

Earlier this week Mr. Musk made a second round of unsubstantiated allegations against Vernon Unsworth, the British diver involved in the cave rescue operation that saved a group of Thai schoolboys in July, whom he had called a “pedo guy.”

Mr. Musk did not mention the incident in his interview on Mr. Rogan’s podcast, which lasted more than two hours. He appeared at ease, sipping whiskey, and spoke, at one point, about artificial intelligence and how it could not be controlled.

“You kind of have to be optimistic about the future,” said Mr. Musk, the head of the private rocket company SpaceX as well as Tesla. “There’s no point in being pessimistic. I’d rather be optimistic and wrong than pessimistic and right.”

Mr. Musk explained what it was like to be inside his head, calling it “a mutation” that leads to a constant flow of ideas that makes him invent things.

“At first I thought I was insane,” he said.

When asked about his activity on Twitter, he said he tried to ignore negativity on the platform and went on to describe his behavior as “on balance, more good than bad.”

“But there’s definitely some bad,” he added. “So hopefully the good outweighs the bad.”