and if you look at all the attractions Disneyland has had throughout its history, most attractions and the like come and go, and most music isn't remembered. Those select few that prove to be winners and stand the test of time are allowed to have their music ingrained in the public consciousness...whether people like it or not.
Entertainment usually does not get such opportunities, with perhaps MSEP and now Fantasmic! as being the exceptions. Entertainment product normally only lasts so long, is replaced far more frequently than attractions, and doesn't run constantly from park opening to closing. Not quite the same thing.
Not to mention that quite a bit of show and parade music is not released for sale...though that doesn't mean some folks don't still request it.
And if you think the more recent contemporary works are not going to be remembered because you don't like them, that's perfectly fine. But you can't use that to paint a picture of whether or not the work is successful or not from an objective point of view looking at the grand scale of things...or trying to say that future works are going to be just as disappointing...just doesn't work that way.
But believe whatever you like, most of you already have your minds made up about most things anyway.