If we're going to play that game, where did the electricity come from for your watt-hour-sucking GPU?
A coal plant? How many died mining it? How many got life long illness or injury/disability mining it? How much poverty did the abusive mining industry inflict on poor dependent communities? How many hundreds of thousands of people were affected by it's emissions? How many thousands of cases of asthma? How many deaths?
If we go nuclear : Where was it mined? Who mined it? Who processed it? Where is the waste going? Are you supporting rather despotic countries depending on ore source? Etc
Or the cards themselves. Where did the rare earth materials that go into graphics cards come from? Where were the graphics card parts manufactured, and where was the board assembled? Are you benefiting from near-slave labor for your cards?
I mean, if we want to play that game, there's so much to examine!
"Uranium mining in the United States produced 3,303,977 pounds (1,498,659 kg) of U3O8 (1271 tonnes of uranium) in 2015"
The US. I wasn't aware there were a significant number of uranium mining deaths? I also assume the US can process it and safely dispose of the waste. No despotic countries of course.
China is a tough one though, I don't know how we justify it.
But that isn't an inherent fact of a diamond. Mining them doesn't require that people lose their lives it's a fact of shitty people. And most diamonds consumers will encounter aren't from that stream.
I strongly doubt the intention was to waste electricity, more likely it was incidentally designed that way, as it's difficult to conceive how you could create such a decentralized cryptocurrency without proof-of-work (at least at the time).
