Actually, some of them do.
Not every prepper is prepping because they're crazy conservative assholes who think the world is going to end.
Many of them are minority groups that have already experienced real hardship and understand that nobody is coming to save them if the world goes to shit. They will have to be self-reliant, and they're working on building skills for self-reliance. Many of them are using those skills in Mutual Aid groups.
I worked for a lady at my states Ecology department who was a prepper, and she was a dirty hippie who had been practicing wilderness survival for forty years and taught classes on it. She's the kind of person I would trust with wild mushroom hunting and not ending up dead. She also wasn't building a bunker but a community, with many friends who helped her maintain her large property living on solar-powered tiny homes.
A lot of preppers are driven by an understanding that climate change is coming, our governments aren't prepared for it, and they know they need to be able to take care of themselves and their communities when push comes to shove.
Many of them are non-violent and prefer things like high-powered flashlights that can blind an assailant as opposed to weapons.
I know, the majority of them are conservative fucktards, but yeah, exactly, those guys will fail because they think every man is an island and aren't working with a larger group to pool their skills into a successful post-modern-society commune.