The cryptocurrency was never gone in the first place, I think it’s doing number’s and has stayed for over a decade now. Cryptocurrencies are an ongoing technology and socioeconomic experiment.
Crypto is here to stay atleast for coins that already been here for years like bitcoin, eth, ltc etc.
But for those coins that are newly created it will be depending on their uses and worth. Some new coins are shitcoins and cant stay longer because they are losing their value due to investors dumping the coin/token and there's no progress anymore on the project.