The people would remain though, and begin to rebuild unless the attacks were extremely broad and sustained for a long duration. No power or water stations in Gaza any more, but they are still hanging on in very dire conditions.
People are resilient. And adaptable. Just because we do things one way that works for us does not mean that one way is an absolute requirement.
Not that there wouldn’t be chaos, suffering and casualties. Just that it wouldn’t be the end.
I think that’s a little sensationalist. For instance, we do find the ruins of ancient cities in archeological digs and can link them to where we do have surviving records of their appearance in stories.
Your point is taken, though. I do, however, remain convinced that people massively overestimate how many people would die in some form of collapse though, unless it somewhat swiftly took down major portions of the Earth’s biosphere.