I won't disagree. So let's speculate.
Maybe it's getting tougher for radio stations to survey their audience. It would be easy for a rock station to keep playing rock bands that were popular, and they'd keep their listeners I suppose. But then you made the argument for "quality" which is wholly subjective.
At least concede that looking for the same sound is a dead end. Innovation is sparse - I can agree that a lot doesn't work but I can guarantee that the clash of styles and horrible covers will be worth it one day. Some of that rock and pop "trash" is experimentation, because radios want the genres to evolve quickly for other generations - in the meantime it gets popular because we all appreciate a stupid diddy now and then. I don't see the problem in that, exactly.
If you're looking for hooks and concepts in music, you can still find that occasionally, if I'm not undermining the industry a little. "Read a book" has a message as does "Handlebars" and probably some others I need to find. Sometimes what someone else finds lame, could have lyrical meaning to another person. "Something about Us" and "Places I've Never Been" had made me emotional before. I don't think that's entirely "modern", but I'm mature. Fifteen year olds need something to listen to, and if their getting the worst end of it, poor them, but they'll mature and experiment! I'm sure we can foster a love of music for posterity, regardless.
I'm glad you said that!Btw...MJ's Thriller is orders of magnitude more structured, richer, and deeper than the no.1s today.
I think what we worry about is that we don't want 50 cent to be classical one day and no one who cares about music wants that. I don't think we have to worry though, the next timeless sensations will come from somewhere and we won't have a clue how they rose up out of this mess.
Not that I have the answers. My ideas on music have prompted some pretty weird thoughts about what old composers would have thought and et cetera.