Sometimes me poop is green, if I run an antminer s-12 ( low power, older model ),
There was no such model, just saying!
By "green" he means that the ASIC miners are powered by green electricity, which in turn means that the electricity is generated from renewable energy sources, i.e. hydroelectric power, solar power, geothermal power, biogas etc. I think Elon Musk has a point here because the miners from China - and they are currently the majority in Bitcoin mining - mainly use electricity from environmentally harmful brown or black coal.
Black, brown harmful or not, it's cheaper! Miners will only switch to green energy when that energy is cheaper, other way they will simply not do it!
Germany tried to get rid of coal, now thanks to the new green energy they are paying the highest price per kWh in the world, miners will not be able to do this without government subsidies, and who is going to pay for that?
You either go nuclear or you spend an insane amount on things bad weather can render useless.
This whole eco-green madness needs to stop at one point, you end up only in a shitty situation. Here in the EU governments have tried for decades to get rid of the personal car because everyone should use public transportation, save the planet, all that, then the pandemic hit and public transportation grid to a halt with one bus per hour and suspended routes. You didn't own a car? You were f!!!