I couldn't agree more... Which is precisely why the entertainment sector never fell into the trap of adopting the terrible design of 13A connectors as a standard where they are avoidable.
Indeed. although I've lost count of the number of times that "Electricians" have told me that I MUST remove those out-of-date & illegal (?!) 15A plugs from my tungstem lighting kit and replace them with "modern" 13A plugs!
Also, apparently, a 15A rubber plug to 15A rubber trailing socket extension lead made from 1.5mm^2 H07 TRS is "dangerous" and must not be used!