[almost]

It’s called survivorship bias. Most things that people called bullshit we don’t remember because they were bullshit so why would we remember.

Now “crypto” is a little different because the the promise (not always followed though on, it’s still negative sum) of money to anyone who can bring themselves to believe. Like many bubbles and ponzi-like schemes before it’s primary functionally is to promote itself, and damn that’s one of the few things it’s really good at.