This factors in some feedback loops which most sudies to date have ignored. Note, that it excludes extra warming caused by all the additional water vapour in the air.
For context, studies suggest that the largest extinction event in Earth’s history (so far), the Late Permian Extinction Event, saw temperature rises of around 8°C.
It’s been 5x as bad 10x as fast every single time. We’re zombies eating ourselves. Our hunger only grows.
What is surprising is the rate at which it is getting worse!