The article says he is a pump.fun streamer. That's not even real crypto. It's literally a pump and dump website where anyone can make a new fake token by giving it a name and a picture. Then the price is set algorithmically until it gets enough people buying it that it converts into a real token. There are no fundamentals or differentiating factors between the tokens. It's all a scam built upon the greater fool theory. At least different crypto currencies have different attributes and reasons to use them over others.
You wouldn't want cold storage of any tokens on that site since they'll be worthless the next day.
But, tbf, I don't know if it was pump.fun slop that was stolen or a real crypto currency.