I'd say this is a significant factor. Some youtuber did a video where he basically showed that most Musk stocks were overinflated by a factor of 10 based on their traditional metrics. The difference was basically built on investors' confidence that Musk could keep the companies growing. Between driving away customers, not focusing on building his businesses, and still not achieving the goals he promised, investors are rightly worried that desired growth is no longer something to bank on. He may have to stop relying on the wunderkind factor and actually start running his companies responsibly, and I don't think he can do that anymore, if he ever could.