Something similar can also happen in crypto... insiders can inform outsiders that a large holder might exit and they need to sell their tokens quickly before the price becomes worthless. This situation is clearly detrimental to holders, as they are stuck with assets whose prices have plummeted, while others have already saved their funds, all thanks to this insider information.
However, this only occurs in the altcoin market, as altcoins are easier to manipulate and a few large holders can dominate, this significantly increases the chance of them exiting, leaving everyone with significant losses. In Bitcoin, you won't find these insiders because the Bitcoin market is much larger and decentralized, making it more difficult to manipulate.
The next question is how this information could have been leaked, since they should have been able to keep it secret to allow the coin they were building to thrive. I don't know if this has ever happened, and perhaps that's also why I've been less interested in investing in altcoins so far, even though I may have been involved in some before. Even if it had, there would be no transparency, and they likely intended to deceive altcoin holders about their ongoing project development efforts.
We often see large holders strategically entering and exiting the market in an attempt to manipulate the short term, as I believe it would be difficult for them to survive in the long term. Bitcoin is different because its market is much larger, and it's difficult to control its price in the long term; even with large holders it would never work especially in the long term.