I know deep down you mean well, but I don't follow your logic.
Just because you were not around when something was happening, it doesn't mean you cannot appreciate the historical events that occurred, when they happened, and see how much of an impact it has made over the years.
The Huskers vs Buffaloes rivalry is a real thing. It goes way back.
I wasn't around during Jimi Hendrix. But because of history, I am well aware the Jimi Hendrix experience was a real thing, and still is a real thing. A thing of beauty.
Recorded between 1966-1970, it was released in 2000 so that all may experience who was re-inventing the sounds of the guitar. You were not born, nor was I. But it still existed then and appreciated now, because history shows us how real it was and is.
Another example. You cannot say you were born in '88 so there for you have no idea and don't care. If you heard of rock-n-roll, you better brush up your history to realize that Little Richard and Chuck Berry were the architects of RnR. Just because you weren't around when they put a unique charge into music, creating the sound of rock-n-roll, it doesn't give you the naive thinking that it didn't exist.
And my last example. Rap music was put into the forefront by Run DMC, LL Cool J, and the Beastie Boys. Often, they have been considered as "hip hop" by this generation, but they were rappers at the time, and we all fell in love with rap because of them. They created a trend with it, creating a hip-hop visual, sound and culture to go with the rapping. Fortunately, I was around for this phenomenon and experienced it as it happened and grew. I don't mind if they are referend to as hip-hop, but they will always be the pioneers of rapping, straight up.
I mean, just because it was before your time you cannot use that as a reason why don't know, and there for you don't care today. Thankfully to most of us, it worth knowing Pythagoras contributed to math, astronomy and music theories. Because we care about history and increase our knowledge and appreciation for it.
Nebraska vs Colorado was a thing, history tells us this, and the importance of the rivalry should not be brushed off or glossed over. It will always be a thing. Show some respect.
How about that for some energy