If he could at least be accurate in the listing of FAR violations. For example, you are NOT violating sterile cockpit if you are doing a non-flying duty on the ground with the parking brake set. Says so in company FOMs. The specific reference I can think of goes something like this: "PAs other than the 'be seated' PA specifically required by the before takeoff checklist may be done outside sterile cockpit (hereafter defined as the period with aircraft not moving and parking brake set.)" This permits you to, for example, make a PA talking about a delay in takeoff where you turn off the seat belt sign and allow cell phone usage while occupying a taxiway. You are at that point no longer in sterile cockpit.