These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Dr. John Biersfield Marston of "The House of Horror" is the runaway winner. When his son, crippled in an accident, is Driven to Suicide by his fiancee deciding to break off the engagement due to being unable to cope with his injuries, Dr. Marston proceeds to kidnap and surgically mutilate her (by removing the bones from her arms and legs, among other things) and keep her in a basement in his house. This Disproportionate Retribution would be bad enough, but he then goes on to kidnap and mutilate thirteen other girls who did nothing but have the misfortune to resemble the fiancee! A fourteenth girl is saved (and de Grandin offers to perform the surgery to correct the damage done to her face), but the others can only be mercy killed. Interestingly, he's one of Jules de Grandin's few non-supernatural adversaries.
Values Dissonance: Oh dear, yes. A lot of the stories reflect the racial attitudes of the 1920s and 1930s (just look at the tropes associated with the story "The Isle of Lost Ships") and Alien Flesh takes the Third Law of Gender Bending to new heights (or lows).
Fair for Its Day: That said, Quinn has had characters decry the poor treatment of women under conservative or patriarchal systems (usually foreign ones in comparison to contemporary America).