A song lyric is merely a story to be told.
It can rhyme, it might not. It can be profound, it can be silly. It can be about some bird you shagged while you were at school, it could be about WW2.
A song can be about anything.
Whether you like it or not is another matter.
Things that can come into play: who is the singer? Do you think he/she is almost god-like, or do you think they can't sing for toffees?
Is the backing any good?
Most importantly, does the singer convey the full meaning and emotion of the lyric?
Even if they do, you might just think the song's crap.
For me, I can respect a song, even if I don't like the singer or empathise with the subject matter.
It's a very broad church, this songwriting lark.