[cykros]

Everything you've just brought up as a concern is addressed, and more, over at https://endthefud.org

The energy use is a big one people who don't think it through keep coming back to (thanks to the WEF planting this bogeyman back in 2017 or so). Miners do not operate when the cost of electricity is high, for economic reasons. What they do, however, is look for stranded power. This has led many to operate where gas is otherwise being flared, as well as on wind turbine and other green power sources, making it economical to build them out as it creates demand. That demand in turn falls off if other use for the power materializes, but is there to pick up the slack if the surplus re-emerges.

These are a few examples, of which you'll find many if you bother to look. Bitcoin in many ways serves as a battery to balance demand for energy, and may well be one of the greener initiatives out there. Which certainly can't be said for traditional banking infrastructure.