Since JSON is a subset of JS, I would have expected `.` to be the delimiter. That jives with how people think of JSON structures in code. (Python does require bracket syntax for traversing JSON, but even pandas uses dots when you generate a dataframe from JSON.)
When I see `/`, I think:
- "This spec must have been written by backend people," and
- "I wonder if there's some relative/absolute path ambiguity they're trying to solve by making all the paths URLs."