All I can think when I see threads like is was the scene from the movie “Tremors”
The survivalist builds an underground bunker with enough MREs to feed a city but the creatures evolved and attack from the air, in the end the whole place explodes and he loses everything.
Looters will evolve.
War is always a race of who can come up with the newest the best, the easiest the most effective. They evolve then you evolved. In the end it’s a war of attrition. It’s who can out last the other, because dead men don’t evolve.