How on Earth does someone have a nine-digit account and not know anything about risk management?

Maybe he was right when he said he was just lucky. Probably traded some memecoins, got some nine digit figures through "luck", jumped into leverage trading thinking it would be the same and got rekt. Sometimes. I think people need to learn the hard way.
If he had risk management, he would of never reached nine-digits to begin with.
He made crazy amounts of money with meme coins. If he was careful with his money he probably would of took profits too early and never became a millionaire.
I still think its crazy to enter a billion dollar position and post it in public for everybody to see. This is risky because its easy for them to run your stops which they obviously did and a few weeks later we hit new ATH. Was he stop-run? Who knows but you should never post your large position like that because in the past whenever there was a large person to liquidate who was close to their liquidation price, usually their stops got run.