Who do you listen to speaking on the subject? It is brought up constantly. You can have a documentary on TV about climate change without bringing up Venus as a cautionary tale, for example. People who concern themselves with climate change genuinely think it will lead to mass human die offs, in my experience.
It could lead to mass die offs but due to starvation, extreme weather events, and most of all war.
If we reacted with calm rationality we’d probably adapt pretty well but we’re not likely to do that. One refugee crisis to Europe has just about brought on the return of fascism, and that’s minor compared to what major climate change might cause.
Climate change will be like AIDS or anaphylactic shock. You won’t die of it. You’ll die of the stuff it causes.
It is. It's also a fringe belief that's not held by anyone serious speaking on the subject.