People can talk all day and say things could have been used for something else or something better. Most of the time people can think of an idea but nobody does it. Don’t be hateful towards BTC miners because they actually did it. Like someone else mentioned in another comment, water would be much better utilized by not going into thousands of pools and golf courses or watering lawns. You would probably need investors to have a large operation but it doesn’t make these people elite or whatever whales are. The people I know who mine using oil exhaust are wholesome good people just making it by like everyone else is and trying to live their dream. The difference is BTC (not other cryptos) using renewable energy puts it in a unique position to be a good product for everyone as it’s a money that is equal for everyone to use, unlike traditional fiat currencies.