But the rules of counterpoint were codified after his death (IIRC there were two people who worked together to do it), and act like an averaging across all baroque composers. Making the rules is kind of like putting it in a glass box, sealing it off and preserving it - IE removing all life from it. A contemporary example is how punk became standardized, just wear leather jacket with safety pins and mohawk and play barre chords. The spirit of punk moved to post-punk and elsewhere but also this bizzaro copy of all the superficial aspects of punk moved elsewhere.
While I love Joseph Campbell and the heros journey, I do feel like sticking too strongly to it does the same thing for narratives. I especially hate insistence that everything needs a three act structure, not because it's inherently bad, but because stories that don't need it are shoehorned into it and given an unneeded third act with more set pieces than genuine character motivation and development. It's like people see a good movie with a three act structure, and think it's due to that specific structure.