I am sure you can find climitalogist who don't believe in ACC but I think the number is really really low and the previous posted publication proves that point.
Even if you don't believe in ACC you should know that a rise in CO2 levels does not just affect climate change. IT affects the ocean acidity which will cause major changes in marine life. You can't simply just reverse this process and it could mean extinction of large ecosystems within the ocean.
Like it or not there is good reasons to lower CO2 emmisions outside of GW.