I know it's meant as a rhetorical question, but I think it deserves an answer for everyone around here who still doesn't get it: you and I, and every other person on Earth, no matter whether they are a blockchain enthusiast, or actively interested in its demise.

Proof of waste is a colossal externalised cost; you think you're trading "your" electricity and dollars for "your" imaginary money; but the fact is, you're wasting my planet. Cryptocurrencies have already caused enormous harm, and even as the fad is waning, it couldn't die soon enough.