How much is Elon Musk to blame for Tesla sales slip?

The criticism of Elon Musk’s behaviour came after Tesla reported its first quarterly fall in deliveries of its cars in nearly four years. Photograph: NurPhoto via Getty Images

For one Tesla investor, the cause of Tuesday’s underwhelming sales figures was clear: the chief executive.

“Basically, Tesla can’t sell its cars due to Elon’s behaviour,” wrote Ross Gerber, the chief executive of the investment management firm Gerber Kawasaki. “Let’s stop blaming the Houthi rebels or German environmental terrorists. Or a recession that never came. Or interest rates. Only one person responsible for this.”