Hasn't there been multiple variations/iterations of "validity of climate change"? As in, some form of "climate change isn't real" to "climate change is real but it's normal and not man made" to "climate change is real and man made but it's not that bad" so on so forth.

I wonder if the opposite exists. People in climate change denier groups that exaggerate just how normal it is which as you said only causes more doubts and recruits for the opposition.

I admit I haven't delved into the "opposition" - in this case assuming that "deniers" are a loud minority and the main agreed viewpoint is some form of climate is going to be bad for everyone regardless of the source. But given the rigorous process in science and how much evidence is available (whether deniers are skeptical of ALL of the evidence or not) - is there any research with a similar process against it? Regarding what you said about how the "irreversible collapse is also quite unlikely"?