I have seen a lot of survivalist stuff from the 70s and 80s. I always filtered it through the lens of post-cold-war understanding of the frailty of the Soviet Union behind their facade of power. However, the US has become ever more transparently totalitarian over rthe years, too.
Many survivalists are hilariously patriotic. Others are racist asshats. But many have useful ideas regardless as we enter the strange new world of domestic police State abuse, a global war on terror perpetrated through terrorism, and a society deliberately denied any philosophical foundation for generations by a government monopoly school system.
Sake the wheat, discard the chaff, and do your best.