The end of human industrialized civilization is only a reasonable outcome as a secondary effect (e.g nuclear war destroying most of society). And even then I'm

The end of human industrialized civilization is only a reasonable outcome as a secondary effect (e.g nuclear war destroying most of society). And even then I'm dubious if we'd reach human extinction rather than just the end of industrial society. Even with 5 or 7 degrees celsius warming there's still a lot of habitable land. The main concern is that agricultural capacity will be lower overall. This will disproportionately impact poorer countries that have less resources to do things like improve irrigation infrastructure, or set up large thermonuclear desalination plants to cope with lower water supply.