>>211676634
well, america won the cold war, no reason to showcase cultural superiority in film, music and art (CIA funded shit art to surmize). If you still think 80s era height of pop culture wasn't adjacent to intelligent agencies, you are just being willfully dense. Thats to answer the true question of OP which is why there is no change in culture.
Compare watch a film from 1989, then think of a film 25 years older, 1964, and you can feel the difference in culture. Wouldnt even need to know the dates, just a few images, you'd know the decade. Now compare that to a film in 2025 and one in 2000. To be crass, the only difference is the amount of shitskins. Overall? There's nothing to discern the 2020s from the 2000s outside of an iPhone. So unless there's a fantastic coming of age tale unboxing an iPhone, period pieces are extinct