Absolutely true, my point is more about extraction per se now that alternatives for some uses exist, and definitely the bootstrap problem is real and fossil fue

Absolutely true, my point is more about extraction per se now that alternatives for some uses exist, and definitely the bootstrap problem is real and fossil fuels were the only way to get past it. What I'm saying is more of an "externalities may exceed the value for any future time" than "we should go back in time and ban them from the beginning". I also suspect that as chemical feedstock and niche uses they'll effectively never be replaced, just probably be synthetic instead of extracted.