The relevant metric is probably something like electricity spend (or ton of CO2 emitted) per dollar of economic value created.
Bitcoin and ethereum burn a lot of electricity, but they are also worth a lot.
Bitcoin and ethereum burn a lot of electricity, but they are also worth a lot.
No more crypto miners buying graphics cards, far less CO2 emissions, crypto retains it's value since most owners don't really care about how it is made anyways and only see it as an investment opportunity.
(Modulo some unforeseen consequences, of course.)