Original SotS was set on a plantation in Georgia. There are no more bears and foxes or hills in Georigia than there are in Louisiana. The people who did not want Splash to change are the same people that do not want Zootopia in ToL because animals don't wear clothes (as they ignore the fact that the animals in Splash also, in fact were wearing clothes).
It's a ride in a theme park. I'd much rather have a ride with working, state-of-the-art animatronics, than a ride that had become a museum piece with more broken down animatronics than working ones. On my last ride they had even completely removed the tied-up Braer Rabbit from the final lift scene. It was BAD, bad in the weeks and months before they closed it. You could say they had given up on it, which is true, but I assert that is just evidence of how hard it was to keep the whole thing running all along. My kids were calling it "the ride that breaks down a lot" long before the announcement came that they were changing it. It is the only Disney ride I have ever been evac'd off of.
TBA is a GREAT ride! Change is hard but you'll get used to it. If not, fine, just do us all a favor and don't clog up the line if that's how you feel, or at least keep your opinion to yourself if you do join the queue. What's done is done - enjoy what is there.