Let's go in parts (eras), someone remembers or knows the Kyoto treaty, there you can get the answer to when they say bitcoin, "consume", blah, blah, and the "blah, blah" is not derogatory, since some things that are mentioned are TRUE.
The point is, actually, bitcoin turned green because of the pressures, it was not a natural path of the crypto mining industry!
Let's return to the Kyoto treaty, it is ironic to think that at the time the countries that pollute the most said no to the pact, and one of them is one of those that has attacked bitcoin the most.
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Kyoto treaty:As a curious fact, one of the biggest scams in history was carried out thanks to the sales of CO2 emissions, yes, there is a market for the sale of "smoke", literally, countries have a limit of emissions, but they can buy these "emissions" to other countries that do not use them.
Anyway, a big scam occurred that allowed most country to "pollute more" because they bought more rights to pollute (companies really did it). Little is said about this, but it is there as a real scenario, for the purchase and sale of carbon emissions and other gases.