"That's the case for many, if not most public companies."
But even if true what effect does that have on her arguments. She never claims having these relationships is unusual. She only states that the minority shareholders were not informed about them.
"Yet, it amounted to a huge gamble - multiplying the value of a 50B company by over 10x -, which in case of success the board agreed to reward with 6% of shares."
Her opinion emphasises that Musk indicated, repeatedly, he had no intention of ever leaving Tesla. What was the gamble. No matter what happens he still stays working there forever. Where is the leverage. Musk was even dumb enough to admit he was "negotiating against himself".
Try going to your boss, promising you will never, ever leave and then ask them for a raise.^1 Imagine the boss has no personal relationship with you and acts in the best interests of the company.
1. Just in case anyone becomes confused: I am not suggesting what Musk was "negotiating" was a "raise", I am simply using as a hypothetical a more common scenario amongst mere mortals where compensation is being negotiated and the threat of leaving can be used as leverage.