Foraging is how unsupplied armies operate.
People who are too much of a p@@@y to try to take their country back, and at the same time are too damned stupid to be a moving target will duplicate what that response has garnered across thousands of years of history. Especially if they make themselves a strategic resource.
A book called “A Civil War Journal Of A Union Soldier” by P.C. Zick can be had pretty cheap. Take an unvarnished look at what supplying am army looks like.
Bottom line; be part of a military force, not some lone ranger or goofy commune. Even if you are old or disabled.
“not some lone ranger”
If the ultimate goal is to just simply survive, a well stocked retreat in the middle of no where with contact with no one has better odds of surviving than a military force.
I’ve surfed a prepper forum off and on, reading some of their ideas. Many fall into that “goofy commune” thing you mentioned where they’d be so obvious and so ill prepared for a military style attack against them it’s laughable.