Yeah but even then, you have The Three Stooges, The Marx Brothers, and Charlie Chaplin. All 30s-era comedy groups similar in notoriety to Monty Python.
In high school and college in the 70s, people did not go around quoting the Marx Bros. They were generally regarded as belonging to their grandparents' generation. It's just not like Python quotes today, which seem to be just as pervasive as in the 70s.
Can you even think of a MB quote without looking one up? If I made a pun on one, would you recognize it?
Yeah, like I said, I think you're living in a bubble and/or this is confirmation bias. I grew up in the 00s and, from my perspective, I see Monty Python as belonging to my grandparent's generation. No one in my age group commonly quotes Monty Python.
If people still do quote Monty Python, I think it's a culty minority or people who study media. The same status as the Marx Brothers and other comedians of bygone eras.
I find it unremarkable that people today quote SW.