When cleared for the approach you are cleared to descend in accordance with the procedure. You are not cleared to bust step down fixes. I would expect any professional to be aware of that. I would not expect anyone to be able to quote off the top of their head precisely where within the many thousands of pages of regulations it is written.
5 mins of checking led me to AIM 4-4-1. "[A CLEARANCE] IS NOT AUTHORISATION TO DEVIATE FROM ANY MINIMUM ALTITUDE."
Enjoy your free beer.