'Anprim' is short for anarcho-primitivism, people who think advanced technology was a mistake and we should return to a simpler way of life. This ranges from 'weird agrarian tradlife fantasy' to 'hunter-gathering was the peak of human society', but in either case, many of the technologies which enable those of us not born with perfect genes to survive past the age of 20 - including many anprims - would be simply unavailable.
I love perpetually balancing on the edge of subsistence, one step below the agrarian societies that drove me out to the marginal lands unfit for more efficient cultivation! I want to be stuck in a loop of raiding other tribes in the attempt to drive them out of their hunting grounds, then having them raid mine in turn in an eternal struggle to get away from the precipice of doom!
I think it's really hard from a modern perspective to gauge just how unpleasant life was. Nothing about low-tech farming is simple.
I feel like this has similarities to the trolly problem posts as well. As in there's some kind of orange thing threatening us all there too, and we have the choice to put on our glasses or willfully not see what's coming:-).