@DT
No worries, I appreciate the discussion, and questions to my point of view are welcome
I think it is excessive, purely because I can't imagine a situation, where you are cut off from being able to trade or bargain for a whole year. Or even grow your own vegetables or herbs. Or catch fish. Have your chickens lay eggs and ate the chicks.

I do not know what LDS means, so be so kind to enlighten me

No doubt, it is prudent to be prepared, especially where hurricanes, tornadoes and earthquakes are a risk.