It seems like someone along the way cleverly changed the valid and reasonable talking point about the intense and excessive energy use/costs away to a narrative Bitcoin (et al) are causing climate change - which is of course absurd; one of the bigger problems of Bitcoin (et al cryptocurrencies) is that their defence mechanism depends on using a higher amount of energy than someone who'd want to attempt 50%+1 attacks (or lower % take over attempts are still possible, just not guaranteed to allow double spend).