> It was never true that human industry was the main cause of co2 release into the atmosphere.
This is technically true, but I think it misses the point.
It's like complaining about Jeff Bezos being financially irresponsible because he bought a yacht. It might be financially irresponsible for you or me to buy a yacht, but Jeff Bezos's bank account is much bigger, and refills much more rapidly.
It's true that the natural carbon cycle involves a lot of sequestered carbon being released into the air, but nature actually consumes a little bit more carbon than it emits. If we left the natural carbon cycle alone, atmospheric carbon would decline.
Human industry is fundamentally the opposite. We emit CO2, but we don't sequester it in any significant way. Nature may pump more CO2 into the air than we do, but it also absorbs far more than we do. In fact, once nature consumes all of its own CO2, it consumes roughly 40% of what we put out there. The remaining 60% of our output is why atmospheric carbon keeps increasing.