4. Lowered attention spans. It's true across all media, our culturally induced ADHD rewards novelty hits, least common denominator styles, and especially demotes things that require more than 15 seconds to process and understand before moving on. It's not just music it's clickbait headlines and superhero movies too.
One could argue it's more about the "thrills-per-minute" counts going up. I'm not saying I totally agree, but it is at least evident to me that movies from past decades spend a little more time between "thrills" than your average modern film.
