Musk's Twitter stunt had the same smell to it. How it will end remains to be seen.
At that time there were constant articles and accusations that billionaires used the 'borrow against stock' trick to avoid taxes. This was addressed to Musk in multiple high profile interviews where he had to justify that. Had it come out at that time that he vested lots of option with additional borrowing, there would have been a huge media outcry against him.
Of course then when he did sell the stock to vest the options. He got shit on because it dropped the stock price and tons of articles were written about how he was manipulating the stock price. And now your story is that its because he knows of the coming crash and wants to get out.
So the moral of the story seems to be, it doesn't matter what you end up doing, you will get shit on an equal amount no matter what you do. Being a a very public billionaire willing to talk about these issues is not gone make you popular.
And Musk cares so much about whatever the media has to say about him..