Disney is/was good at transitions and melding theming when needed. Adventure/Frontier land is a hard transition that was thoughtfully considered and works very well.
Looking at the photos from the day, maybe they're going with the wooden old timey warehouse motif. I mean if the concept of the ride is a Tiana's Food Commune, mix of crates, iron, bricks, etc would work for the ride and visually blending in with the train station.
But you still have the "Frontier Land" front and center which just clashes terribly with something that is ornate and time period appropriate industrial. Never mind that the main "mountain" is very much not representative of the American south west yet, noticeably sandwiched between two deeply south western themed areas. Yes, Splash was also representative of the south, but great care was given to the exterior theming to not cause conflict. Here it seems like there is very little if any thought given based on what we can see right now.