Nostalgia trips manifest themselves in all sorts of curious places.
Conservative politicians in the US — and elsewhere — get a lot of mileage from appeals to false nostalgia, to a yearning for a time when things were simpler, everyone was sturdily self-sufficient or knew their place (or both), and government was small (sometimes small enough to drown in a bathtub).
Outside [that], we have the peculiarly rustic aspirations of the green fringe, who’d like to see a world of five million or so pre-industrial humans living in harmony with nature.
I think these ideas are mostly delusional because they rely on a fundamental misapprehension about the world around us — namely that we live in a society that can be made simple enough to comprehend.