I think to be prepared is smart, but much of what I have heard of on that show goes very extreme.
If you embrace the blessings of the creation that God made for us, rather than relying on corporatism to feed you, you don't have to prepare.
For instance, if you have chickens that a free range, that lay fertile eggs (that you can eat or hatch), they will feed you. If you have a garden, that can feed you as well. Goats will provide milk, butter, cheese, cream, (this can all be made into soaps, shampoos etc.) Gardens can provide a lot as well.
If you are "trapped" in an apartment, try to become "not trapped" and grow what you can on a balcony, or create a "pirate garden" in some woods somewhere. If you are in a suburban house, a lawn can feed you if planned right.
No need for 500,000 rounds of ammo, a tank in your driveway, and 20 machine guns. Water & food embraced as created, (catchment and food production), along with a means of defending it, is about all you'd need.
God created us all we need, most of us have abandoned it.