Still, as a currency or value holder, gold is simply a metal that people think has value. Crypto too has value because people think it has value. It is "mined" like gold, though newer coins don't have this quality due to Proof of Stake, thus reducing carbon emissions drastically. And if people are willing to trade paper or metal for digital objects, is it anyone's place to ban that trade? What about digital money for digital crypto, can we ban that?
All currencies like pieces of paper, digital objects, metallic circles, seashells, beaver pelts: They all have value because humans value them.