Right, but they’re not going to build out in a high electricity cost area, they’ll build where energy is cheap, which is often where renewables are abundant.
But like you pointed out, the real issue isn’t energy use, but perception of value. Any amount of energy used to do something with no value is wasted.
I see value in specific cryptocurrencies (esp. Monero XMR), but I don’t know how to effectively communicate that.