Guess it comes down to the definition of "existential". That humans could be reduced back to scattered pre-industrial tribes, many people would call an "existe

Guess it comes down to the definition of "existential". That humans could be reduced back to scattered pre-industrial tribes, many people would call an "existential" crisis. Even if a species of animal called Homo Sapiens would still survive. I think a lot of people would disagree that this is a good outcome, even if some humans are still alive and wondering around.