Well yes, everything you are saying is true. He obviously hasn't accepted that reality yet. Few have, that's part of the problem.
However, on the plus side many of the emergency measures he is advocating here are sound ones. Air travel needs to be severely limited, personal autos has to stop, METHANE USE MUST BE IMMEDIATELY HALTED.
Stuff like that needed to be done 5 years ago. Now we have to do it right now, or it's too late.
So, he's not your enemy.
Engage and inform should be your goal. His ears are open to hearing your message, so evangelize and inform.
Be an Emissary.
Take what you are given and work with it. Because we need to get a majority convinced that only emergency measures will save us. Or it's over.