No but seriously I just finished reading a book on the (factual not the made-up crazycakes version) origins of the Mormon religious movement, and at the time ACD was writing STUD the Brits were obsessed by Smith and his NRM. So we look at STUD today and think "And suddenly, Mormons! ...wait, whut?" but ACD actually was current for his time when writing about it because everyone was fascinated with it, mostly in a this-is-a-train-wreck-but-it's-a-NEW-train-wreck-we-have-never-seen-before way.