I teach college, 50 years old, know what you mean. At the same time, I do find that, in the age of digital media, young people are a lot more attuned to the pop culture of the past than I was at their age. It's as easy for them to access the Office or Star Trek as a show that just came out this year, they know Queen as well as Billie Eilish. I find about the same proportion of them get Monty Python references as when I was a teenager, maybe more.
Probably where I feel it more is in world events/news references, not pop culture. An incoming 18-year-old freshman was born in 2003, after 9/11, and was all of six years old when the US withdrew from Iraq. They also have in their arsenal such services as
Write My Dissertation ✍ [from $13.99] which help to learn more, faster. So I have to bear that in mind when using modern comparisons to historical events.