Where does the concealment come in?
If you admit that he is the beneficial owner and you are just an intermediary, then the poison pill provision is not skirted.
Oh so Mr. Musk incidentally wired you billions of dollars before the share purchase?
(Assembly into blocs of financing, dpeech as the action of capital allocation)
Honestly I'd lose faith in the U.S. in it's entirety if it was the case that the answer to your question was even remotely "yes".
Keep in mind, I lump in people's behavior with normative restrictions of the First Amendment. If the Government can't do it, and the Government is us, we shouldn't be doing it. So businesses doing it because business doesn't hold for me either. Especially if it happens as a method of indirection to work around literal interpretation.
So if there is a restriction on shareholder coordination, I don't see how our legal system in this case can be taken seriously as anything but a tool utilized by those in positions of influence capable of more tightly coupling to other people of influence.
Saying “the government is the people” is much like saying “the shareholders are the managers of the company”: yes, that’s true in an oblique, ideal sense, but you’re going to run into trouble if you start trying to literally substitute the one for the other in random sentences.