So he should stop tweeting about company related matters unless someone has cleared him to do so.

Seriously why? Do you go around teeeting about potentially sensitive company info? Employees don’t do it, why is Elon doing it?

Meaning his mistakes move markets. Nobody has to be on Twitter. If you are and you're on the c-suite of a publicly traded company, you need communication discipline

There’s a reason lawyers vet public statements by corporate officers.

Making him responsible for mistakes.