It's unfortunate we didn't get more facts from the interviewee on how exactly it's too late. The interview felt more like a complaint about politics and less about the dire situation of humanity.
His view are well-known to anyone who has listened to his broadcasts. He is a clear and articulate speaker.
Edit: I agree with xnx's point that "the climate change "movement" and messaging is so bad and misguided that it is counterproductive." Suzuki is one of the exceptions, his arguments are logical, straightforward and backed up by scientific fact.
For anyone who wants more specific information about the dire situation of humanity, that's very easy to find. He mentioned Johan Rockström so you can check out his work. Or Eliot Jacobson. Or James Hansen. Or the reports that the IPCC publishes. And on Substack, Richard Crim puts out The Crisis Report regularly. It's full of detailed analysis with references to published papers.