Sorry this may not be helpful but your post got me thinking.
Electricity generation is pretty toxic to the environment, mostly due to coal and fossil fuel. Iceland is an exception but wanting more is clearly unsustainable and bitcoin demand a lot of electricity so it jars with my reasons for buying the Fairphone. If you really want to go mining ~~~~ no problem I don’t expect anyone to worry about the enviroment. Fairtrade for the real miners is a lot more empowering.
“It turned around and spent $1.5bn on Bitcoin, which is mostly mined with electricity from coal. Their subsidy needs to be examined.”