Earlier quoted context omitted.
Hyperinflation and concerning political instability worth relocating over can happen without quite reaching the level of a zombie apocalypse.
But is this what preppers are really prepping for? Maybe I'm just too far into the conspiracy theorists and what not, but my personal experience with preppers are way way way futher than fears of social unrest.
If you think of it however as not needing to be rational, but more or from an evolutionary perspective ‘folks in the past who had similar types of fears and discomfort might have survived prior insane disasters that no one else expected to ever occur’ it might make more sense.
It doesn’t have to be rational. It doesn’t even have to help them survive or be successful most of the time. If it works even a little better and they survive when everyone else died because of their insane paranoia, those genes will propagate.