It would be really difficult for something as popular as cryptocurrency to disappear within a few years, maybe in a few decades cryptocurrencies will disappear, but not in the coming years.
I think that just the same for several years cryptocurrency can safely disappear. It can even happen in just a couple of months if the market collapses. But I think that cryptocurrencies are promising and so far they are of great benefit to the whales, which means that as long as they need cryptocurrencies, they will not disappear.
the large number of supporters of the Cryptocurrency who were present were able to make more profits and progress in future. because the role of supporters will be crucial for the progress of the coins in the future.