The Professor mentioned in the post above was nicknamed apocalyptic, because of what he wrote in 2018, however, three years have passed since that date, and now he´s not the only one who speaks of apocalyptic scenarios, as a recent survey involving well-known climate scientists allows us to conclude that the most likely scenario is a warming of 3 °C https://www.nature.com/articles/d41586-021-02990-w and it is important to bear in mind that a 3 ºC warmer world corresponds to the catastrophic scenario that appeared described in an article in the conservative The Economist of last July https://www.economist.com/leaders/2021/07/24/a-3degc-world-has-no-safe -place.
But worse than that, the aforementioned survey shows that there are more climate scientists to believe in an even more catastrophic 4 °C scenario than the (idyllic) 1.5°C scenario that had been established in the famous Paris agreement. It is certainly no coincidence that the financial sector has been preparing for a 4ºC warmer world for some time https://pacheco-torgal.blogspot.com/2020/06/the-economistsustainable-stress- tests.html
It is therefore unavoidable that, acting on the basis of the important principle that guides German and European environmental Laws, Humanity stops believing in fanciful idyllic scenarios and prepares for the inevitable consequences of a catastrophic 3°C warmer world.
PS - Earlier this year, a report was published in Australia that analyzes the risks of that country associated with a 3 °C warmer world, so why haven´t many other countries been able to produce similar reports?