You should read this:
5. A researcher put 15,000 Billboard Hot 100 song lyrics through the well-known Lev-Zimpel-Vogt (LZV1) data compression algorithm, which is good at finding repetitions in data. He found that songs have steadily become more repetitive over the years, and that song lyrics from today compress 22% better on average than less repetitive song lyrics from the 1960s. The most repetitive year in song lyrics was 2014 in this study.
Conclusion: There is some scientific evidence backing the widely voiced complaint -- on the internet in particular -- that pop music is getting worse and worse in the 2000s and the 2010s. The music is slower, melodically simpler, louder, more repetitive, more "I" (first-person) focused, and more angry with anti-social sentiments. The 2010s got by far the most music quality down votes with 42% from people polled on which decade has produced the worst music since the 1970s.
Snarky Puppy - Lingus (We Like It Here)
Hiatus Kaiyote - By Fire
Alina Engibaryan - We Are
Simpler and more repetitive doesn’t mean worse — it means simpler and more repetitive. Never once have I listened to a song and thought, “Wow, this sucks, these lyrics would compress really easily.”
That hypothesis is, unfortunately, starkly false.
Music nowadays really is crap; time is not helping it. If we use our 20/20 hindsight and pick the best music of, say, the past 50 years, it will be heavily weighted toward the first 20 of those years.
Thirty years ago, sure, I thought that a lot of "music nowadays" was crap; but, unlike today, I also thought that a good deal of it wasn't.
OK...why do you think is it false? That you don't care about contemporary music doesn't really disprove it.