It really isn't. Unless you're referring to the political motivations behind this change. In which case, i'm not interested in arguing that nonsense anymore and not taking that bait. It always just leads to a bunch of baseless accusations that disappear as soon as the mods wake up.
Splash Mountain is at its core a fantastic ride that the vast majority of park goers love. And yes, it certainly has earned becoming a permanent attraction. 30 years on, I can't even think of a single thing that needs "plussing" (just bring back routine maintenance). I think i've been pretty polite and even headed about this overhaul thus far, but the fact remains that getting rid of the ride is itself a massive mistake. That's the entire problem.
Give Tiana her own purpose-built ride. It's a win-win in that case. We won't lose an already A+ ride and the park would see a net gain to its capacity. If a hypothetical new build Tiana is also a good ride, that's another plus. Has a better chance too without being constrained to the limitations of an existing layout that it was never designed for. Unless they don't think they can create something that can stand on its own without destroying something else in the process.
I totally agree with you, Tiana should get her own little land. The north side of The Rivers of America have plenty of space for New Orleans Square, that could be, and really "Should" be an equivalent space for her to the new Little Mermaid, Beauty and the Beast and Seven Dwarfs Mine Train section of Fantasyland.
The problem with Splash Mountain is basically the same problem they had with Alien Encounter, "some people loved it, and other people found it upsetting and felt it didn't belong in the Magic Kingdom." ...but the solution they came up with, to swap out the unpleasant alien with the more comedic Stitch, pleased no one, and really didn't put Stitch in a very good light either. I like Stitch, I think he's a fun character, and he should of got his own great attraction instead of being used as a "band aid" to fix a problematic attraction.
I was a teenager when Splash Mountain opened, and I grew up watching Song of the South on local TV. Every Saturday or Sunday afternoon one of the local TV station in Philadelphia, where I'm from, would play old kids movies. Each week it would be something different, Mary Poppins this weekend, Willy Wonka the next, then Chitty Chitty Bang Bang, Swiss Family Robinson, Davy Crockett, so on... Song of the South was one of the films in that rotation, it was also one of the oldest films in that line up, and like Old Yeller and Johnny Tremain it had this heavy moral to it, and it was kind of going out of style in the early to mid 1980's. I thought it was really strange Disney chose to build a huge theme park attraction based on it at the time they did, but it's a really beautiful attraction...
The point is, I understand why people are uncomfortable with the Song of the South characters, but also I think Splash Mountain as a whole could still work with out those characters. A few years ago I went through Pirates of the Caribbean with my 3 young nieces, and when we got to the original auction scene it was uncomfortable, I could tell our 3 young girls didn't understand what was happening, and felt like "that scene" probably need to be changed... but not the entire ride need to be changed.
The core experience of Pirates of the Caribbean, which people love, still works, that one aspect needed to be reworked... and I think completely changing Splash Mountain because of a few out dated characters is a mistake, it's to me the biggest mistake since the altered Imagination and tore down Horizons... and Tiana will probably get a lot of ill will like Eric Idle and Stitch do, or like Mickey and Minnie's Runaway Railway does, which is a shame