I don't buy that explanation, there's clearly a ton more human involvement here than just rearranging verses.
The output is far too grammatical and maintains too much thematic consistency across filler word distance to be output by a low-order Markov chain, but is too unique compared to the (very small) corpus to be output by a high-order one.
https://www.reddit.com/r/Music/comments/gc68t3/nickelbot_nob...