This is just another rep of the elon musk playbook for wealth. Here's how it works:
pick a big ambitious sounding goal, preferably one where there are government subsidies in the vicinity (electrify transportation, make life multi-planetary, solve traffic by building tunnels), and where your competition is stodgy existing companies that listen to their lawyers and shareholders
make a bunch of insane promises that make this vision sound so good that you pull in investor money and idealistic, naive young engineers
coerce young engineers into working incredibly hard by massively overpromising schedules while encouraging them to disregard any existing best practices
This is not the worst way to do things, but it also explains why he has all these different companies -- he needs each one to be existentially focused on something for step 3 to work.
Twitter did not follow the playbook, and so he's run off the rails into "become a drug-addled dipshit fucking up democracy" territory, which is no good for anybody. Imagine if Howard Hughes had been able to live tweet his breakdowns to 100M people.