In this specific case, the oop nature of powershell doesn't actually matter, just the fact it uses structured input instead of raw string.

It's like passing a struct to a function instead of a badly serialized representation of a value

Hmm, not sure I understand. How are those shell based?

I agree that rust and haskell are not your typical OO (or not OO at all in a traditional sense) I guess my poorly worded claim was less focused on the OO nature of psh than on the typization (which both of these also do) - if you knew what type $rev and $path are, it's easier to distinguish intent, whether objects or not.