I think you deserved a fat lip for talking to anyone that way. In a just society you'd of been knocked on your ass for being a jerk of the highest level.
Everyone in your line of work is a saint, right? If someone else screws up in your profession it justifies you being castigated and insulted, right?
Where checking authority of examiners is important is Sport Pilots. We had a fellow relay how they pulled his SP ticket because he was signed off by a guy who was authorized for PPL's, but not SP and the pilot then had to get another check ride with a qualified examiner.