F@H is using the energy for something useful. I don't view the creation of a digital speculative asset as useful in the same way I view scientific research (something terribly underfunded as-is)
Crypto is a cancer even when users voluntarily participate, but that's a separate discussion. It's incredibly inefficient and I distrust anyone downplaying the severity of fragmented commerce networks that individually use more energy than entire countries with millions of fungible flesh and blood humans.