I slightly dislike(I know, I can be petty) those Twitter people who seems to think that Bitcoin is the answer to literally whatever news-trending problem there is. But "wasted" renewable energy is one good use-case of Bitcoin mining. They contribute to the network, and at the same time they get value in exchange for the supposedly wasted energy. Win-win!
They're trying to hype bitcoin, it's the fault of those ultra fanatics.of bitcoin that exaggerated it's uses and it's purpose to the point that it become the truth/norm for the many. And those Twitter people are all shills, they have somethinng to gain when the price goes up so they use the platform of Twitter to shill for bitcoin.