The guy made 200% in one hour. He wasn't wrong. I operate in a very similar way. The only difference is that I would have withdrawn only the initial investment, leaving the profit in the currency.

a trader known as "Sell Fei" sold 12.8 million KEKIUS, missing out on a return of 4500 times the investment. It is reported that the trader bought 12.8 million KEKIUS with 0.255 ETH (about $1000) 18 days ago, but sold all of them for $3000 after holding them for only 1 hour. If the trader had held onto the tokens until now, they would be worth $4.5 million, resulting in a return of 4500 times the investment.
#zachxbt