It may have nothing to do with Jewishness. Secret Service or police or protective agents will not tell you who their “Clients” are. They clearly needed the person in the restroom alone so that there is no interference. It is protective. Someone could pass them information, a weapon or attack the person. the restroom was treated like protected area.
celebrities in manhattan will not answer the question of WHO ARE YOU. If you dont know who it is, maybe you do not need to know. its that simple. Its all in the name of their work.