Proof of work uses a lot of energy. There are a few steps between that and “bad for the environment”, and you probably also need to explain why any other econom

Proof of work uses a lot of energy. There are a few steps between that and “bad for the environment”, and you probably also need to explain why any other economic activity which uses a lot of energy is not also bad for the environment. All human production processes use energy, and therefore all economic activity is “bad for the environment” in the exact proportion of its energy use.