By that definition, isn’t 99.9% of employed America “working stiffs?” Of course if you’re really making $500k/yr, why aren’t you buying a well-managed condo per year, renting it out for $10k/yr or so profit, so as to have a Plan B if TSHTF as far as your job or company?
If the people who spent their time “prepping” and collecting arms spent half their time preparing financially for independence, I bet they’d be a lot happier.