I think he’s being judicious, thoughtful, and scientifically accurate as usual.
The man is a walking time-capsule at this point. He has seen the planet when it was quite a bit colder, when the reefs were alive and there were no “dead zones” in the oceans. He has seen the animals try to adapt and the politicians doing nothing. I can’t imagine what he really thinks. I’m projecting, but I think I would be screaming like Roger Daltrey in Don’t Get Fooled Again.
The decisions we make as we rebuild our economies are critical: get it deeply wrong and we will be in dangerous territory.