I have no problem with that - it's a style choice certainly.

As I said, I'd like to see simpler subclassing of pathlib objects. I just think it'll be quite hard to do (given the complexities of classes for Windows/Unix as well as pure and concrete paths). So if it's just about examples like this, I personally would take the easier route and just go with standalone functions. If someone else felt strongly enough to design and implement a subclassing solution, that's fine though.