#7 It's entirely possible that Musk was the "useful idiot" in this scenario. More money than most countries at his disposal, and more hubris than his health is likely to stand.
The useful part is that Musk will run Twitter and do the bidding of his investors. Like divulge identifying info on dissidents, or delete certain inconveniently-true posts.
You don't invest billions in an unprofitable company unless you have plans for said company. Making it disappear is probably worth a few billion to authoritarian rulers who don't want their populace to organize. And if they do organize, now they have a way to find out who those organizers are.
OR, Musk really is less intelligent than he appears and thought he could, through fanboys and sheer will alone, turn Twitter profitable. It's entirely possible that he's one of those ridiculously out-of-touch billionaires who lives in their own information/echo bubble and he just couldn't see any of this coming.
Either way, now musky is running scared. Fantastical floundering should begin by the turn of the new year.