Please cite specific, real-world examples if possible, not vague ideas and promises that haven't come to fruition yet.
If we establish, through regulations, subsidies and taxes, a situation where it is always cheaper to use green energy; Crypto would bring nothing but massive investment in green energy development.
Even if we get to a point where we can power crypto purely with green energy - that might still mean that not enough green energy is available to power other, potentially more important use cases.
There is really no other way to fix this.
There's limited amount of space for solar panels, wind turbines and hydroelectric power plants.
Even if we were to achieve fusion, we'd be limited by e = mc^2, where m is limited within a radius that is reachable without losing energy on transport.
You can't fix a physics problem with market ideology.
And i think you are being unfair conflating the current energy shortage with a hard limit that the human race may never reach. The current energy shortage might have been averted if the investment from industries like crypto, was invested in renewables..
Off grid mining finds stranded energy which stops methane being flared directly into the atmosphere and converts most of it to CO2, which is factually better than any amount of CH4 being released.
By making stranded energy viable PoW actually allows green energy production to be built where existing demand cannot make it economically viable.
I think it's a question of mentality. Some people bet on human ingenuity, and some are willing to halt the progress completely because it hurts "mother earth" in their imagination.
If we do end up in the "age of cheap, green and almost limitless energy", we can use some for crypto, why not. But we're not there yet and I'd rather not put the cart before the horse, given how important an issue energy and climate are.
Your way of accusing sceptics of being in the way of "progress" recalls the promises of soviet planners or various cults. Beware of vague salvation promises in the future - utopian fantasies usually have dystopian outcomes.
Your tone is also similar to that of the stereotypical 14-year old "libertarian/ancap" living in their parents' basement, and your only other comment on this site outside this thread is one from over 6 years ago accusing the Washington Post of publishing fake news. This doesn't affect the truth or validity of what you say, but it doesn't help, either.
It also doesn't help his case that the Levenshtein Distance from "troorl" to "troll" is only 2.
After fourteen years of running this experiment, Bitcoin (and other cryptocurrencies) have not yet delivered a single real world application that would be beneficial to the society at large - as far as I know.
I can't help wondering if some of the advocates, who continue to defend these technologies, own themselves cryptocurrencies and have a personal profit motive in glorifying/hyping the technology - for example by hinting that cryptocurrencies would have solved "countless wars and atrocities of the past 100 years".
If it's coming so soon, then how about you immediately stop burning coal and shilling ugly ape jpegs for a while, until all your utopian libertarian promises are finally fulfilled and free of unintended consequences.
But until such a time, just put a lid on it, m'kay?