The thing is, I actually believe that in a way. That the human population is the actual problem, and the only way to reduce CO2 emissions is by culling 7 out of 8 people (87%) so we are reduced to the population of around the mid-19th century.
However, I also do not believe that CO2 by itself is causing things to warm up, so take that as you will. However, I do believe there is a connection to the CO2 rise, and the industrialization and destruction of the ecosystem that is required in order to sustain that almost insane population growth.
But I also do believe a "killer virus" is coming, that is simply mother nature's way of culling excess numbers. And throughout history, disease had been the biggest killer by far of humans. And someday we will see a disease that snuffs out a significant percentage of the population. Like Thanos, it's inevitable.