You're forgetting that stupid crap is a byproduct of ferengi capitalism (see above). The 20th century thus marks a watershed of phony no less important than the adoption of agriculture. But in this regard Bukowski predates Jared Diamond's critique by over 3 decades.
I think he'd have become more cynical with age and noticed this trait in people in whichever era he lived in. He's not exactly unique in that regard either.