Relative to other speculative manias in history, crypto is a mechanism for mania and speculation. You can't trade tulips on tulips. But you can trade crypto on crypto.
For example, in the British railway mania of the 1840s, many patterns occurred similar to today's crypto frenzy, such as stock exchanges created expressly for the purpose of trading railway stocks and publications to talk about and advertise railway stocks. But railways lack crypto's reflexivity because you can't trade railway stocks on railways. Crypto mechanizes its own speculative mania.
But what's the other side here? Does it even exist? I think it does exist. In my view, a balanced discussion of the pros and cons of crypto often seems to elude the HN community.
HN is a community of technologists, right? So what's the actual technology here? At the root of crypto are two technologies, 1) programmatic public chains that are inexpensive to run and 2) zero-knowledge proofs.
By combining public chains and zero-knowledge proofs, we get an inherently global market, with p2p transactions that scale to all of humanity, where you can send money digitally, similar to handing a $20 bill to a friend. And the transfers can include rigid, sophisticated logic that offers the potential to reduce transaction costs for many kinds of routine economic activity.
So, while it's fair to say that most crypto tokens are effectively trash and crypto mechanizes scams and speculation, it's also unfair to omit discussion of the fundamental innovation, and those who do so will end up on the wrong side of history.