For many songs the lyrics are completely irrelevant and are simply used as another instrument. So there’s not much point measuring how repetitive lyrics are because music itself is repetitive.
Not every song has to be a lyrical masterpiece, or as two wise robots once said:
<span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span><span style="color:#323232;">Rock, robot rock
</span>