I understand what Ranking Glasses say, but the concept ''substance'' can go very deep, and maybe it could be molded by subjective standards. There's a kind of simplicity that is very hard to create. As Peacemakeya said there's some factors that involve psychological mechanisms, some people will feel it and some people won't. ''Some like it hot and some like it cold''
Also the beat, the instrumental itself can carry some kind of emotion that complements perfectly with the minimal lyrics.
Tune in 2 made a good point too, i think there's some songs that doesn't need nothing more than repetitive parts to express what they were meant to express.
There's also some simple songs that don't pretend nothin more to be than pure entertainment.If any man have ears to hear, let him hear!
This is not reggae, but for me is a clear example of a repetitive proper simple lyric that reach the target:
https://www.youtube.com/watch?v=JbY_ujqEuvk Lamize pa dous- Misery not sweet