Probably. I mean, having 12 months of food and other necessities sounds pointless and then COVID happens and it looks sorta clever. The so-called "Reign of Terror" in France lasted about 12 months, that would be a really great time to have had a bunker stocked for 3 years.

We don't know what will go wrong. Being over-prepared and easily weathering difficulties is a much better plan than being underprepared.