While I completely agree with all your other reasoning. It should be pointed out that PEP 8 is not intended to be a styling guide for user code, it's intended to be a styling guide for the standard library: https://www.python.org/dev/peps/pep-0008/#introduction

It's nice the broader Python community generally agrees with PEP 8 but it's always a little weird to see it referenced as an authority on styling user code when it is not it's intention and does not claim to be.