They know WW3 is around the corner if everyone keeps it up

important to note that switzerland always had a bunker culture and has always been a bit... obsessive about that. The majority of houses have bunkers, and at least until recently, it was illegal to not maintain them, keep them stocked, etc.

Someone I know who moved there shared this experience once: their neighbor saw that they, not being Swiss and not being all that concerned with all that, wasn't sticking the bunker. They told them, "don't you expect to get into ours".

Now, that was in the 90s, where expectations of cataclysms were at a low point...