I think he’s got it broadly right unfortunately. His timescales are probably a bit short (he has admitted as much in more recent interviews), but I’m sure it’s coming.
As someone said above we’re probably past the tipping point or close to it, and the world as a whole shows absolutely no signs of changing it’s ways.
Having thought about this I’m now thinking it’s not so bad. It’s inevitable really as humans only seem to learn from experience, so once we have screwed up the planet and most of us have died, we then just have to wait a few thousand years for the planet to fix itself and at that point we can start moving forward as a species again, and we won’t make the same mistakes that time because of this experience (we’ll probably make some different ones though…)