In a sense, you're right. Songs probably don't even try to compete with more articulate music. I think they're fine in their simplicity. What's sad is that the vast majority don't even know what a more refined music is and why they should listen to it.
Did you know that most traditional, complex music systems - such as Indian modal and Raga - are taught for YEARS first only as vocal expression? By SINGING, one practices the musical elements by internalizing it - in the body. One is often not permitted to touch an instrument for one or more years...
Singing is a primary, forceful creative expression. It wasn't concocted to mask bad productions. There is lyric. There is music. There is music and lyric together. Each are distinct. Sometimes, there is a powerful an collaborative effect. Some music is never written, unless the writer is moved so, by the line that is written or sung - then comes an inspiration!
There are some powerful musics that first erupt as song, and their makers could not tell you where one started and the other ends.
I would suggest going to a good black church on a couple of weekends. You might see simplicity and "refinement" differently, than listening to what passes for "song" in the commercial marketplace.