I think basically because there is nothing interesting left to discus. One camp (where I am in) basically believes it is an environmental disaster, unsuitable for its stated purpose and most likely as scam by the "whales" manipulating the price, and with a potential 51%-disaster. The other camp believes that it is the future of money, untraceable wealth storage and inflation/"confiscation proof" and that all the envi…
The environmental argument is a straw man, and not really related to crypto, but actually related to our energy mix. If crypto was mined only on renewables there is no environmental argument. Ergo, not related to crypto technology itself.
What about the non-recycable waste after "renewable" energy. Windmills have steel coated by epoxy wings, those cannot be recycled.
Solar panels is also ready for the trash-heap after 20 years, due to being a complex composite..
The only real energy source that would help would be nuclear, but even if we get that where have more efficient room-heaters and better use of the computing.. (protein folding could be one for example)