I completely agree with everything you said; however to clarify what I meant originally, I say "ecologically unfriendly" because of all the ways to do distribut

I completely agree with everything you said; however to clarify what I meant originally, I say "ecologically unfriendly" because of all the ways to do distributed consensus, proof-of-work is the least efficient mechanism when compared to the various proof-of-stake algorithms and Ripple/Stellar's cascading consensus model. They all have their own individual tradeoffs (some technical, some political), but when talking about energy consumption, there's no argument that PoW is the most costly.