In the world of cryptocurrencies, black swans can be in the form of hard fork cancellations, massive hacking of cryptocurrency exchanges as happened on several exchanges in the past and FTX collapse events which ultimately hurt many investors. changes in government regulations that result in large losses for investors can also be called black swans. These events are very difficult to predict and often have a large impact on the crypto market. Therefore, investors must be wise and careful in making investment decisions in crypto, and must be prepared to deal with sudden changes that may occur.
Nobody expected a black swan event when they had to be in one.
it was totally unexpected, but some people who haven't entered expected a black swan event to happen to wait for the bitcoin market price to crash.
Black swans are by definition rare and unexpected events which almost no one could see coming, so we could always be hit by one when we less expect it, however those kind of events affect the most to those that have leveraged their position, but for those which are just holding their coins and are managing their money responsibly the effects of a black swan are not as adverse and you can easily deal with them by just avoiding selling your assets for a low price.