All this FUD re the energy cost of Bitcoin mining is based on the fundamental assumption that using lots of energy is bad.
This is false.
If the energy used produces more value in the economy then it is good.
Does anyone complain about aluminium smelters or the energy cost of refining oil?
No: because what is produced is of great value and utility.
It is the same with Bitcoin mining.
If the world has to build more power stations then this will create jobs and economic growth.