There is a moral imperative to stop crypto/NFTs/etc, especially from those most vulnerable to it, the young.
We are putting the planet in peril already without the existence of this pointless technology, which represents the first net-negative invention of Computer Science. As a discipline we must evolve to apply an ethical lens to what we do, just as other sciences have had to do with time.
I write about this position at webtwoboomer.com, flagged thread here about it here https://news.ycombinator.com/item?id=31330281