When crooner jazz and classic rock fell out of favor with the mainstream only to be replaced with overproduced dance pop, EDM and later on with nigger rap shit, it was a signal of something changing for the worse within society at large.
Radio music is mental programming. It's a well established fact that listening to music changes your mood and thinking. We all used to listen to upbeat songs about stuff like talking to a cute girl, great rock songs about enjoying life, or some of the world's best singers singing heartfelt ballads about love, all mostly optimistic, pure stuff. How do you suppose that made people feel?
Contrast that with today, when the most famous "artists" are zoomers singing (badly) about mental illness, niggers mumbling something incoherent about ugly expensive cars, clothes, drugs and money, negresses shaking their obese asses and wailing about fame, fucking and bling, and so on. How do you suppose listening to this disgusting goyslop makes people feel? Not to mention every single one of these songs uses the exact same 4 chords because the music industry jews figured out they're the "easiest" to listen to. Variety is dead.
I'm not trying to be an elitist faggot trying to judge people's taste, I don't give a fuck if you don't like rock or jazz or whatever, that's fine. I'm just pointing out those genres carry much more positive messages than the shit the masses are made to listen to today, so the fact that they aren't popular anymore has been a net negative to society.
It goes hand in hand with the utter demoralization of society, the prevalence of greed, people wanting nothing more than to "hustle" and be rich so they can buy lambos like their favorite nigger "artist", etc. It's sickening