Humoring your thought experiment: yes, I think society would accept the evidence. Lots and lots of people already dismiss the science, claim it's a hoax, or do

Humoring your thought experiment: yes, I think society would accept the evidence. Lots and lots of people already dismiss the science, claim it's a hoax, or don't want to contend with the inconvenience climate change demands. But...I think you'd continue to see pushback on pollution in general, because living in polluted environments is just terrible. Remember LA in the 80s? Been to any of the SE Asian megacities now? Even if it had zero impact on the future of the planet, reducing emissions is still a laudable goal for the myriad other human costs. Moving away from car-centric lifestyles has a lot of benefits aside from the impact on carbon pollution, like reducing the time spent sitting in cars on gridlocked freeways and city streets. People would still push for the societal changes that reduce auto dependence for those reasons, even if there was zero human cost to carbon-producing transportation there.