It is psychotic but it’s pretty on brand for Musk. See his behavior in the Thailand cave rescue incident.

Personally I’m interested to see if he starts claiming he’s a founder of Twitter like he does with Tesla

Different companies get bought for different reasons. Sometimes you’ll see manufacturing companies bought and everyone fired because the buyer wanted the machines and material and the real estate and brand etc, but didn’t care about the organization itself.

Musk clearly didn’t buy Twitter to aquhire their data engineering department, so cleaning the slate and bringing on a new team might Be the fastest way to get where he wants to go.

Not a fan of Musk, but.. it is officially his business. Why do you assume he was not spending that time getting re-org plan in place? It is not narcissism. It is "I bought something and I want to make it look the way I want to."

To be fair as part of the purchasing process, musk has had plenty of inside information for quite a while now.