If it indirectly triggers nuclear war, it's plausible. Even just India vs Pakistan will lead to about a billion starvation deaths due to crop failures around the world as an externality. We were close to nuclear war in the 20th century despite no exogenous disturbances. What do you think will happen when there's mass migration and other stresses on the global order?

> mass migration

In case you’re wondering why he claims global warming will lead to mass migration, it is because the millions of miles of coastlines will change.

Florida has already so unsustainable that only the US government will insure the structures and buildings. The Netherlands and Venice are also another artificial human livable area. Frozen regions of the world will become habitable so livable landmass will actually increase in northern tundras.

What planet are you living on? There are tons of companies offering private flood insurance in Florida: https://www.floir.com/sections/pandc/floodinsurance/floodins...

Climate hysteria is really something else.

Tons? https://www.sun-sentinel.com/business/fl-bz-hurricane-season... >“In Orlando if a house predates 2010 and is worth less than $300,000, no company is going to write [insurance for] you,” warned Locke Burt, CEO of Security First Insurance Co. in a June 2020 Sun Sentinel article.

https://www.forbes.com/advisor/homeowners-insurance/why-is-h... Residents there that cannot afford the insurance that exists might as well mean that it doesn't exist the same way life saving surgery cannot be purchased by a person makes it nonexistant.

And even more land that becomes too hot, too dry, or not sustainable local sustenance

A large asteroid impact would do it.

>> There is no universe where climate change causes the literal collapse of civilization.

The confidence of this statement reeks of arrogance. How can you even claim to know what the potential impacts of climate change do not include? It's not like modern humans have lived in any era that was remotely similar.