I would consider the new title somewhat sensationalist, or perhaps somewhat misleading. Based on the new title, I expected a movie about Southern culture in general, and got something about a rather specific aspect of a specific town. Granted, the content of the documentary does extrapolate out to other places in the south that celebrate the plantation/antebellum/"Gone with the Wind" aesthetic, however I thought the doc would get more into, say, Southern hospitality in general and the resulting illusion that Southern culture is kind and welcoming. I also think the new title implies a more directed, mission-based film--like an investigation or expose--whereas the actual product is more subtle.

However the title isn't a total lie; the documentary lives somewhere adjacent to the assumptions I list above. I can understand why they (whoever "they" is) changed the original title, which is neither catchy nor that descriptive (I would have been unlikely to click a random video simply titled "Natchez"). However I think they could have come up with something a bit less click-baity and more accurate to the content. Regardless, it's a good documentary, and despite my misled expectations, I enjoyed the watch.