If you read more closely you might discover they are predicting catastrophe biological system collapses. As we reach irreversible tipping points, there is little time left to bend the curve. Of course, much of the IPCC language is maddeningly dense and technical. So skimming - which is what more policy makers do - it how these reports should written. Here are a few helpful links that make their urgent warning more explicit:

https://www.dw.com/en/ipcc-depicts-unfolding-climate-emergency/a-60938009

https://www.wri.org/insights/ipcc-report-2022-climate-impacts-adaptation-vulnerability

https://www.greens-efa.eu/opinions/understanding-the-latest-ipcc-report/