Plenty of creatures could thrive if we don't get climate change under control ... just probably won't be humans or mammals:
https://www.theatlantic.com/science/archive/2018/10/dinosaurs-dolomites/573286/
The planet's long term chances are way better with climate change as humanity's destruction rather than nuclear war. At least reptiles and plants will make it and totally paper over our short lived destruction of our environment.
Things will live, but it will likely be worse than with the dinosaurs, probably along the lines of the Permian-Triassic extinction also knows as the "Great Dying". That's because of inadequate time for oxygen-producing organisms to evolve and ecosystems to adapt.
It will get worse of course after higher life goes into a fossil record as heating trends tend to have an inertia of sorts. In some hundreds of thousands or millions of years a new stable system will reform and whether it's higher animals, insects, or microbes which survive is anyone's guess.
Naturally, people want to dismiss this, even those who are scientifically literate, and that's completely understandable. No one ever takes the end of the world as we know it seriously, and it's almost always right to do so- almost.