The dawn of the "modern era" in the west is attributed to the rise of Jesus, and, forgive me but what are the various stories of Jesus other than total ridiculous bullshit- reincarnation, "immaculate conception", all the other nonsense- intended to build and maintain the social and financial control structures that existed at the time?
I have not studied concrete instances of bullshit in the middle ages but the post-Enlightenment (a bullshit term if ever there was one) was riddled with bullshit. And then the late 1800s in the US featured "snake oil salesman" and "wildcat banking"- these sales pitches are literally indistinguishable from those described in the article.
Technology changes the diffusion rate and potentially the effectiveness of the art of the bullshitter (debatable) but the art itself is ancient.