I don't see the problem—all of the economic value generated by Bitcoin can be invested into green energy. In fact without Bitcoin the world would currently be about 1 trillion USD poorer.
"green energy" isn't magic. you don't just throw money into energy until your carbon budget somehow becomes neutral. this may be shocking, but money can't actually solve every problem. and "can be invested" doesn't actually mean "will be invested" or even "will be invested in a reasonable time frame where we can do something about the climate impact of crypto, which is already like half a decade too late".
let alone the nonsense about "the world being 1 trillion poorer without bitcoin". where do you think the value that's "generated" by bitcoin comes from? at some point, to redeem the value of bitcoin, it has to be converted back to real money, you know. or goods/services that would otherwise be paid for by money. that's not really how economy works.