It is more fantasy than reality for most of these people, and the men particularly like their part of being big-strong-men and it is the women who are expected to do most of the work. As Tammy was also expected to do pretty much everything from devoting herself to CD, make his business work, work, take care of the home, and CD seems to have had only a theoretical interest in these ideas there is very little chance that poor woman could have possibly kept up with all the things she was expected to do.
Usually the real preppers aren't the men - they are the women who know how to sew, plant and can. Men just play irl dungeons and dragons, talk a big game, and go to adult summer camp.
There are some quotes from men from cultures like this over time- a native chief for example talking about how they guys got to hunt and smoke while women did everything and white dudes thought they had better ideas. Or a few tribes in Africa and Asia with similar beliefs. Men are warriors - women do everything else. That's why the men always look so fancy in their fantasies (and IRL cultures like this) - the men pretty much don't do much but wait until they might have to wade into battle against a predator or another man. What isn't very obvious in these narratives of the men who are attracted to this stuff, is it is the women who do all the work, but the women they want are the women who don't. Which leads to them then requiring more than one wife - one who is actually competent and the woman they want to show off and screw.
Not to put too fine a point on the prepper fantasy world of men preparing for the end of the world conveniently leaves out how the people who do all the work are women.