This title was the best designation he found after much thought—Aiwass has many titles, such as Minister of the Department of Care of Magical Creatures, former Pope, Crown Prince... But he believes that "Cardinal Archbishop" is the highest-ranking title, and also subtly implies Aiwass to "please spare me" as a sign of submission.
His address of Isabel as "Queen" also carries similar meaning. Although Isabel is no longer a queen, he hopes Isabel would recognize this as an important conversation concerning the relations between two countries, and requests Isabel to place herself in the position of a queen.
Through social positioning of others, influencing their self-definition subconsciously, and adjusting the environment to be more conducive to one's own survival—this is undoubtedly a survival strategy belonging to the Path of Adaptation. Since it is not an Extraordinary Skill, it would not cause any fluctuation in the Path.
Upon seeing him, Aiwass's lips slightly curled up.