Doomsday scenarios are something almost none of us could be properly prepared for. Practical prepping is not doomsday prepping. I'm not trying to "split hairs" here. I'm honestly asking questions that I also struggle with. Not everyone is able to even put up many provisions, like the kind you mention, due to lack of space and money.
Bad planning on their part does not make my good stewardship a bad thing. The stored food I have "put up" takes up less than one closet space in my home. It's perhaps 16 square feet of space. The "affordability" is simply a state of mind. I grow all the vegetables we eat and can enough to last till next harvest. I can or freeze meat the same way. Those who don't could simply purchase a can or two extra on each shopping trip and accumulate that way. There is always a way.