This is also what makes films from the past so interesting. It’s literally time travel. There’s no better way to learn where we’re going than seeing where we’ve been. It’s like a backtest for the stock market of human culture.
I feel sorry for anyone who lacks the ability or curiosity to detach themselves from the zeitgeist.
[1] Sunrise: A Song of Two Humans
(you have a stronger point than I first thought: film and albums are nineteenth century, while tv series and music videos are twentieth, so these are all young media by comparison with dance, drama, literature, poetry, etc., and so may still be in the steep phase of their development curve.)
Meanwhile, the series writing got much mutch better then it used to be and of one just can't compare.