I would guess his intentions were noble and were based on what was best for humanity in the long run (e.g. spacex, tesla). Social media is a cesspool where the companies that own them have no incentive to clean them up because cleaning them up would cause them to lose money and affect shareholder value negatively. Taking it private would allow him to make the hard changes that would have a negative impact on short term profitability but be best for everyone in the long run.

That makes no sense because it hasn't really pumped. Stock price is basically where it was 5 days ago.

wouldn't it be dump and dump? surely, this Twitter poison bill going to tank the stock. Twitter stock went up after Elon bought 9%.