While this response seems 100% reasonable, I don't see how this it is any more effective in the face of "Climate change is a Chinese hoax" level absurdity. At this point with deniers it is religion so reason is out the door regardless.
The opposing argument is that people are making is as follows: 'climate-alarmists' misuse climate-science as a means of making political change.
It is not a denial of all climate-change science.
I don't care to argue this topic because I'm not expert nor do I care to pretend to be one on the topic of climate change, but this misrepresentation of the opposing views is part of the liberal-bubble so many people live in - all while smugly assuring themselves how much smarter they are than everyone else.
Some clarity about what is and isn't 'settled' would certainly improve the public debate on policy but I'm not holding my breath.
Trump has been clear and consistent for decades on this stuff, which I'm not sure you can say about any other belief of his. A new clarifying statement from the IPCC would not suddenly clear everything up for him.
Could you please refer me to where he said that 'all climate change science is a hoax'? I would agree that would be a factually incorrect statement though I could not find anything where he said that. My interpretation of what I've read from what Trump has said, is that Trump believes that Climate Change Alarmists (from his perspective) utilize it to for political/policy reasons beyond the purely environmental reasons that they claim.