You don't understand the point that you're arguing against.

Producing fiat currency through manual labor uses a mix of renewable resources, and value is provided. You can't just dig in the ground and get paid for it. You have to do something that improves someone's business or life.

Producing crypto is just turning coal (or whatever) into numbers. There is no intrinsic value created in that chain.

If the crypto loses value, you may have even destroyed resources in the world for no reason. It's a net-negative.