I mean unless you're a climate scientist yourself, at some point you have to choose your experts to trust. Almost every climate scientist disagrees with this guy. I'm far more likely to trust the IPCC and their hundreds of experts than I am this single guy.

See especially pages 16-17 of the Summary Report for policy-makers: https://www.ipcc.ch/report/ar6/wg2/downloads/report/IPCC_AR6...

We're well on track to blow past 2C of warming, where every single risk/impact category as at the top of the scale ("Very High").

A popsci summary, if you prefer: https://arstechnica.com/science/2022/04/ipcc-report-the-next...

> People have been confidently predicting doom for millennia, yet it keeps on not happening. Humans are pretty resilient.

I'm definitely not predicting extinction, however massive climate-driven impacts are unavoidable, and large-scale war seems an almost inevitable consequence of those impacts. Large-scale war has definitely happened before, quite a few times.