What I’m saying is, either civilization is going to fail or it isn’t. If it is, urban centers are going to collapse and a lot of people are going to die and most gasoline cars will be useless in a couple years. If it isn’t, utilizing the frameworks of civilization to handle disasters will be as effective as anything else we can do, hence no need for extreme resilience (growing you own food, canning, making your own clothing) or rugged individualism.