He’s not buying all of that for himself. He probably has his own wallet we know little or nothing about. This is using other ppls money to go place bets on Bitcoin. Doing stuff like using Bitcoin as collateral when it is low and then buying much more when he is high.
He’s got the guts of saying that anyone who trades Bitcoin has low intellect and then goes to leverage other ppls Bitcoins when he shits himself due to margin call and liquidation levels.