There is a middle ground. Lots of people watch Shakespeare without agreeing with 17th century morals. I like the talking animals but gotta admit that the Uncle Remus book has enough uses of "the N-word" among other red flags that it shouldn't be celebrated with an E-ride. I think helping the case further is that kids don't know who Brer Rabbit is anymore, and it's hard to give them any context. Many people don't want to hand a bookful of broken English dialect and recurring a racial slur to kids who wonder what Splash Mountain is supposed to be about, and the movie's got it's own problems in addition to probably being boring.
Did you not see the lyrics by Randy Newman's famous songs, who did the music for Princess and The Frog that will be in the ride? N Words and other slurs all over. Your logic seems flawed.