I think most of the mainstream music that gets overplayed everywhere is getting worse.
But the music that's lesser-known is pretty good!

I put that it's constant because the meanings of songs (like, popular songs, and some others) haven't really changed that much.
I hear songs from decades ago talking about sex, love, and romance. The classic rock songs we know and love talk about girls, stalking, and even some drug references. There's music today talking about the same thing. I don't know why people think music is suddenly talking about this stuff because it always has if people paid attention to the lyrics and nothing else.

For example, Come on-a My house by Della Reese:
youtu.be/-PJzG5cQwBM
I bet if Rihanna sang this song people would think of it as just another slutty song.