There is a phrase that has been around, with some minor tweaks, for quite some time.
"Any society is only three square meals away from revolution".
Authorship is a bit obscure.
What is true is that the most advanced civilisations are heavily dependent upon its infrastructure - power, water, food supplies etc - that supports it, and were a major catastrophe to occur, that infrastructure would be stressed. And it can be quite frightening how quickly people in groups and mobs can revert to the most primitive and atavistic responses, with mindless violence.
So, if you think that humanity is in imminent danger of catastrophe, then it might be considered only sensible to make some provision for survival. However, I personally can see little evidence of such a threat, and the people showcased in the article just seem somewhat obsessed with the doomsday scenario.It is interesting that many seem to have a belief in some of the less evidence based conspiracy theories doing the rounds at the moment......