I mean california screamin and the incredicoaster are the same ride functionally, but most people i've asked preferred the original, because of the music. Even if a ride is the same ride functionally, a retheme can completely change how a ride feels and in a lot of cases its quality. On the universal side of things Transformers and Spider Man are the same vehicles and basically the same track layout, but it's rare to see someone argue that they're the same experience. I'm not really opposed to the idea though, as I only started riding splash mountain in the last 5 years or so, so I dont have the same childhood nostalgia towards it that a lot of other people do, but I do agree that a retheme can essentially change a ride to a completely different ride, even if the technology and layout is the exact same.