I don't know Chamath, but his presence online makes me think he is shady af. His whole TSLA "selling my shares while telling everyone else not to sell" scheme alone gets him a black mark in my book. Then all the SPAC stuff he did makes it even more unwholesome.
Chamath is about as shady as a typical shady salesperson, but I would not say he's nearly as shady as a Trevor Milton.
Can you go into some details or point me to some sources?
He talks about it in interviews. While he was at Facebook, he started an investment fund outside of work. Now I do not want to get sued for mischaracterizing what he did. You will have to listen to those interviews yourself.
I am aware of the investment fund he started both while he was at Facebook and after it. Neither of them were done in secret and in fact Facebook was an investor in it. Furthermore the companies that the funds invested in had no business dealings with Facebook. You can see the list of companies it invested in as it's public info.