"Earth is moving beyond the range within which modern human civilisation developed." Way, way, way, way overstated. The graph shows a comparison to an average over a few decades. Human civilization is thousands of years old. Does anyone have a graph of what all the El Ninos since the last Ice Age ended have looked like? Of course not. Nobody has that kind of temperature data.
I'm embarrassed for my industry. I'm shocked how many climate denialists there are among engineers and programmers.