Except it's not. Splash is definitely in frontierland, however the back entrance from Adventureland leading to frontierland, is honestly separated and by itself enough and it's basically a straight shot from Adventureland to seeing Splash. Unlike Darkastle, which can't be seen from New France at all. So ?
To the rest of this:
Is it out of place though? You're replacing a ride that is based on the movie Song of the
SOUTH. It never fit with Frontierland to begin with. Replacing a ride theme that was based on the south, with another theme from the south, is about equal, doesn't change anything other than the fact that more people are aware of the new theme being southern. Which again gets back to my previous point: its a straight shot from Adventureland to Splash already.
The Lone Ranger is a really,
really, poor example. Not only was the movie a box office failure, but replacing a ride that already is heavily influenced by racism, with another movie that features a rather large stereotype for a completely different race, would not make the ride any better. (Although from my understanding, Johnny Depp
did get permission to play a person from that Native American nation. However, its definitely still a white man playing a Native America. So. Not a great look. Plus do we really need more Johnny Depp animatronics in Disney?) In addition to all of that, western films aren't popular anymore, and haven't been for a very long time. Sure those films and shows you mentioned, most are classic films that maybe your parents showed you when you were young. But I don't think most of today's families are sharing those movies anymore. (Exception being Home on the Range as it came out in 2006, that was just a bad movie, and definitely played a hand in "killing" 2D animation.)
Nevermind the fact that, when you think about the Old West, "water ride" isn't the first thing that comes to mind. But Bayou does come to mind when thinking New Orleans.
I honestly feel like they will do this right. IMO They have a lot riding on it, considering its their only black princess, and people are already skeptical of Disney's ability to make anything related to poc that doesn't turn them into an animal or what ever the hell Soul is supposed to be? I assume he gets turned into his soul? who know. The animation trope is old and tired and needs to stop, but that's besides the point.