What I've understood so far is that it's likely the rumor that has been said before about Facebook. The other one is also, that he's just wanting to get the attention as Doge and Elon is the one that gets most of the attention in the social media and worldwide currently.

Posts like he did gets the attention of me and probably most of you guys too. But in all sum of it, I just think just as you guys that he don't want Elon to just get all the social media exposure that he gets, he must be in - probably that's on his mind.