My take is that they're old: like 80s or so these notions were bubbling up in certain socioeconomic groups, a canary in the coalmine, only to spread further afield later on.

But I could also be convinced that they're ancient. Certainly some of the references themselves are, like Marcus Aurelius meditations.

So is TRP a reaction to modern times, or is it what remains of prior eras of conventional wisdom?

Bonus: what about FDS? It hearkens back to The Rules to a certain extent, and general "hard to get" conventional wisdom.