> Asbestos solved an actual problem, as did freon. Both also created larger problems and were eventually banned.

I'd argue there's a bit of false equivalence in this paragraph, but for sake of argument:

Leaded gasoline also solved an actual problem, and the industry innovated/evolved beyond that.

Facebook solved an actual problem, and created many more. I still recognize its value even if I refuse to use it myself.

I'm sure there are edge cases, but history is not generally on the side of those who have pre-emptively banned things before they come to fruition.

The problem I see with this current line of discussion is that most proponents of banning throw the baby out with the bathwater, and pretend this is all a single product called "crypto".

Banning "crypto" would be like banning insulation because of the issues with Asbestos.