If you take the physics as given, all we can say that is if nothing different from the model is happening, things will be bad. The nature of "different" is, however, extremely broad.

Wishful thinking is that expensive sacrifices for the far future will be politically feasible while at the same time people need to already mitigate the effects of climate change. There need to be way better policy and technological packages than now.

I think he implying nature will solve the problem regardless. I tend to agree and it’s probably not going to be pleasant for all of us.

Yeah, the narrative needs to be changed from saving the planet to saving civilization, but sadly a return to say the climate of the 70's (where the winters were snowy and summers weren't weeks of deadly 120 F weather) is even less realistic as people wanting to have a "America Great Again" (with current tech, wahey let's keep waiting for that deus ex machina!).

But we aren't even close to lung collapse level predictions.

AFAIK worst case predictions for climate change death aren't above a billion life years.