I live in a small town and I know people like that here. I am always telling them to stock up, but they won't. I am hoping we will get a few weeks notice that things are going to get bad so they can stock up at least a little bit.
The problem is that, if things get rough, they will remember your advice and assume that you took your own advice.
Therefore, you must have stuff put away. They will want a share of the stuff that they believe that you have.
That could get serious.