Elon Musk talked about how BTC mining with electricity isn't environment friendly but he invented electric cars, in near future if this actually becomes popular electric cars will be available world wide and billions of vehicles will be charged by electricity so how is this environment friendly?
it is impossible to have zero impact in the world, to do so we would have to go extinct.
I think what really matters is evaluating the most efficient solution to use energy and in my view bitcoin has the enormous and unique potential to give millions of people the opportunity to participate in the world economy.
I believe that the energy consumption to support its network is not wasted.