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.
YMMV: Show Boat
Fair for Its Day: Focuses on racial issues in a rather sympathetic light(for the 1930's), and Magnolia becomes a career woman after Gaylord abandons her, and raises her daughter well independently.
Memetic Mutation: Ever heard the expression "Tote that barge, lift that bale?" It's from here.
Values Dissonance: Minstrel shows and a man telling his wife she shouldn't work and worry about the man's world. Considered pretty normal in the 1800's (and early 1900's) but rather shocking to a modern audience.
The Woobie: Magnolia and Julie. Both of their husbands abandon them! Oh, and Julie ends up being alcoholic.