I was just watching a few days ago a video where an Italian stand-up comedian explained how the post-war world wasn't ready for stand-up as we intend it today, they required something quicker, cleaner, less "real" to take their minds off the problems of their age (he also explained how American Stand-up would eventually evolve into something different, while our comedic values would stay the same pretty much until the advent of the internet, although I don't think this is really relevant to the point you're making).
Anyway, Bradbury is an endless source of amazing quotes and concepts, and you definitely picked my interest - I'm looking forward to reading your short story.
The early nineties do seem to be around the time everything began to shift. I think some of the comedians of the sixties and seventies paved the way for it but their material was still layered, complex, and had its subtleties. Thank you so much for the comment!