It really isn't. Climate change is going to make large amounts of land unlivable. That's going to cause a climate refugee crisis. I agree the effects of that refugee crisis are unknown, but I can't see any resolution that doesn't involve increased nationalism, civil wars, and violent resource conflicts. Given this is a global crisis, that's a recipe for WW3.
This was all avoidable, of course. But instead of fixing it, we spent decades fiddling around with toys like LLMs. Whee.