I do not understand the motivation behind the alarm of BTC mining energy utilization. In terms of pollution there are much easier targets with obvious net negat

I do not understand the motivation behind the alarm of BTC mining energy utilization. In terms of pollution there are much easier targets with obvious net negatives for civilization. I'll give you one example, Teflon is a fantastic product but it does not need to coat every piece of cookware. PFOA's are likely in the blood of every American. What motivations must one have to not see freeing billions of humans from the control of central banks as something good for humanity? Could the energy consumption of bitcoin mining be merely an engineering problem or are we being asked to eschew bitcoin mining (an cryptocurrencies) for the oh-so energy efficient global financial system? Something smells...