Such sales have ceased to be frequent, because today cryptocurrencies and investors have become much more cautious, since most of the investors who today have lost their money just left the market. Today is the time of smart people.
You are very right. Many left the market in 2018 when it was the bottom. And many remained. Those who have endured and experienced this moment have become much stronger and more experienced. As for me, panic will not scare them.