Looks like he just got lucky with volatility on his side. Usually when you buy options (it looks like that's what he does predominantly) with such long DTE, without volatility on your side, you will get crushed with the volatility crush and the time decay.
the world is full of people who took a shot, made it big and then parlayed those winnings into something even bigger. My friends grandfather-in-law did this with a financial futures contract. he ended up on the Forbes400 list but 40 years ago you would have called him a degenerate gambler.
the fact that he made it is impressive even if it’s a 1x. He has seed money to do many things… something you likely don’t have while trading during the same time period.