I honestly don't know the extent that man made climate change has had an effect. I don't. What I hear from the left is that gas/oil conglomerates try to control the right by funding a climate change denier narrative, and thus funding the republicans accordingly. Maybe that is true. I don't know. If I go outside my body and brain for a minute, I have a hard swallowing the conglomerate pursuing a "YOLO Fuck my kids/grandkids die while i'm old" pill.
What I do feel comfortable in saying is that man made climate change is a thing. I'll agree with the 99% or what have you. What the 99% doesn't agree on is the extent of the effect. I also believe that the left does force feed a narrative that the 99% don't agree on.