Referencing does not necessarily equate to sentiment though. Similar to seeing Calvin from Calvin and Hobbes peeing on thing decals isn't representative to the admiration to the comic series. The "woop woop woop woop" adult voice is another core element to US culture making fun of authorative figures, but doesn't dismiss them as unneed aspects to life.

Those references are to the recurring gag with Lucy and the football.

There’s a lot more to the character than that so I hope 99% is an exaggeration and people are still reading Peanuts and watching the various animated versions. I’m pretty sure they are.