What a lot of right wing preppers and a lot of 'militia' guys (the tacticool heavy infantry kind) seem to completely lack is the willingness to be inconvenienced at all.
They buy or craft whatever stuff seems cool to them (some of which sure can actually be quite useful), train some skills they find fun to do (usually shooting/hunting) but most seem to ignore anything they don't like, find difficult or uninteresting to do (such as keeping reasonably fit). It also usually includes being willing to take orders or cooperate.
The lack of some skills/equipment/preparation could be overcome but not with the mentality that lead to it on the first place.
Id be willing to bet my left testicle those that survive an apocalypse are those who work together to grow food, build shelter, etc. and not the goobers who lock themselves in a crate with some beans.
A lot of these militia guys also don't learn the survival tasks they consider feminine. How many know any sort of gathering skills, cooking anything not meat based, laundry, mending clothes? Those are probably more day to day useful during the apocalypse than rifle shooting or how to wear camo paint.
Yeah, I think the idea there is if you point a gun at someone and tell them to cook and wash the clothes, it's likely to get done. It's that male power fantasy again. They desire civilizational collapse because then they think their love affair with guns will give them the authority and respect that can't find in the real world.
Meanwhile, it's just likely to make them a target. And since most of the people I've come across like this are typically overweight morons, they're just more likely to be killed in the extremely unlikely scenario they're preparing/hoping for. But they see themselves as the main character.
The best tactic to deal with them would be to simply hang around on the periphery until they do something dumb and die of some preventable infection, then move in.
That's because they're planning against the fall of civilization. Realistically that wouldn't happen. The bank stayed open during covid, the supermarket stayed open during covid. All that really happened was that life became very difficult for everyone and some people died.
If your enemy is a virus then your front door is more than enough protection. You don't need a big underground bunker you just need some pasta. But that's boring so they don't care.