To be fair, proof of work crypto does impact electric infrastructure, although it’s difficult to pin that on the negative or positive side of neutral because the cheapest electric rates possible include provisions for demand response / shut offs. The biggest operations will generally be trying to negotiate the cheapest rate possible, but that’s not a given. Proof of work very much affects the generation side (generation costs for all customers, greenhouse gas emissions, etc) in the net negative though. The only exception to this would be on off-grid installations or installations on >100% renewable networks with complete demand response for the crypto and no other alternatives for exporting that power elsewhere. Even then it’s creating useless waste heat, but meh. For what it’s worth, I’ve owned Bitcoin and others in the past but now that I’ve had to deal with the impacts directly in my industry I’m definitely over my infatuation.