It's morbid fascination for me. Up until a few years ago his outward facing persona/"brand" was just a regular tech billionaire occasionally spinning up interes

It's morbid fascination for me. Up until a few years ago his outward facing persona/"brand" was just a regular tech billionaire occasionally spinning up interesting new stuff. And then almost overnight it's like he had some kind of mental break and started saying and doing completely nonsensical things. Why? What happened? Was he always like this behind the scenes and it was hidden from us or did something happen to him?