Gavra, don’t judge a person by their title, fine, but we don’t need to stop using them.
Not saying you should. But as the title means nothing anyway, why not call a person by the honorific that they prefer. If a doctorate in Talmudic law or a first grade Rebbe wants to be called Doctor, Rabbi, Esquire or “Late for Dinner”, let them. As long as they don’t use their title for gain inappropriately, what difference does it make?