This doesn't even sound like a scam though.
He bought some tokens at low price, waited for the price to go up, sold them and that made the price drop. Oh well. Sounds like a normal goal, buy low, sell high.
As part of their revenge campaign, crypto traders continued to buy into Gen Z Quant, driving the coin’s price far higher than the level at which Biesk’s son had cashed out. At its peak, around 3 am PT the following morning, the coin had a theoretical total value of $72 million; the tokens the teenager had initially held were worth more than $3 million. Even now, the trading frenzy has died down, and they continue to be valued at twice the amount he received.
So... basically just some people got mad because they were acting too quickly with no thinking involved, and others were still able to earn on it after that.
If I understand that right, this whole thing is just "I stupidly put my money into your son's untrustworthy currency and lost money. It's all his fault!"