I wonder if there’s value in simulating disaster-living. It’s one thing to be ready with supplies and another to actually live through it, albeit for lesser time. Would it help discover a few more unknowns? Maybe some supply that you would only realize you need when you experience it?
Think of it a life-version of chaos monkey or similar to a fire drill?
Even recently we had a power cut at our place and discovered storing our power-out gear in the garage wasn't very useful with an electric main door and a blocked off side door. If it had been an extended outage I would have needed to break windows to get essential gear.
In my experience you'll find more isolated communities take preparedness more seriously because they experience grid frailty regularly and so build backup options into their daily lives. The least prepared live in denser urban areas where issues are far less likely. Problem is that when they do occur, and on a long enough timescale it's inevitable, general preparedness is low and so the shock and risk is greatly increased.
If shit hits the fan you probably don't want to be stuck with a supply that's already expired.
a) they'll sit in the back of the pantry and expire b) if you do have to eat them you'll be miserable if you don't like them c) you won't know how to properly prepare them and you'll probably be missing some other key ingredients
I know because that's the route I took haha. I won't pretend it was the BEST use of my time but it was fun and I can easily see how much I have of everything and where in my house it's located.
[1] https://www.youtube.com/channel/UC2I6Et1JkidnnbWgJFiMeHA
(We did re-stock it. Never having to use it is a good thing.)