I really can't believe he didn't put any escape clauses in his contract, no due dilligence, etc. I think he's very smart in general but this mistake is pretty much colossal in size.
Immediately starts by threatening advertisers, retweets that story about Pelosi's husband, fires people (probably needed to be done) and then this crazy scheme.
The problem as someone else mentioned is that for Tesla and SpaceX those were really the only two places where you could work if you wanted to do electric cars or space stuff. So they attracted very dedicated people.
Twitter is just web dev stuff and these people can work anywhere. It's not a great time to look for a job but when you get a lot of middle aged people who don't necessarily want to upend their life for their job especially when it was extremely cushy before, well, it's bound to be a problem.
I do think he'll probably pull this off but it's gonna be a pretty miserable road.