"he, like all board members, has to act in the best interests of the company and all our shareholders, was the best path forward."
Obviously Elon Musk continually openly criticizing Twitter, from the perspective of some of the board members, is not in the best interest of Twitter. He would have to join under some obligations that would prevent him from speaking openly about his criticisms, and he'd probably be kicked from the board at some future point. This is why they say it's in the best interest of Twitter that he doesn't join. Musk joining would only result in some kind of scandal months down the line.
Who even decides what's best for the company? One could argue him openly criticizing twitter is in its best interest. Like pouring alcohol in a wound, it hurts and kills off some bad parts of the system but it'll be stronger at the end of it than had you not done it in the first place.
"he, like all board members, has to act in the best interests of the company and all our shareholders, was the best path forward."
Obviously Elon Musk continually openly criticizing Twitter, from the perspective of some of the board members, is not in the best interest of Twitter. He would have to join under some obligations that would prevent him from speaking openly about his criticisms, and he'd probably be kicked from the board at some future point. This is why they say it's in the best interest of Twitter that he doesn't join. Musk joining would only result in some kind of scandal months down the line.