The thinking though feels a little narrow. If the non-wealthy (i.e. the vast majority of the planet) are driven to tribalism, rioting, war or otherwise die off what sustains the "wealthy"? A vast underground bomb-hardened prepper cache?

The wealthy fleeing global warming feels like it will merely be a footnote in Chapter 1 of what will eventually play out.

I worry not simply for the planet but for my children, my grandchildren, and yours, all of ours, as well.