They can be washed by hands, like billions of people still do in the 3rd world. But that's a sacrifice most western environmentally-conscious folks aren't willing to make.
Hand washing clothes is a regression, specially considering industrial applications, whereas proof of stake is in many ways a progress in the way consensus is reached for blockchains.
Being environmentally-conscious is about reducing carbon footprint with smarter processes, not reverting to older ways for the sake of cutting electricity consumption. That was an unfortunate fallacy.
Being environmentally-conscious is about reducing carbon footprint with smarter processes, not reverting to older ways for the sake of cutting electricity consumption. That was an unfortunate fallacy.