There's been a tremendous amount of media produced in the decades since recording film became simple. While the amount of trash produced may have changed one way or the other, the trash gets forgotten. It's easy to look back on a time where an iconic series was produced, say MASH, but forget Mobile One was of the same era.

I find the same to be true regardless of topic, the cars or tools of decades past that have survived often have great reputations, because they were built to survive. Those that weren't, have been forgotten.