I think WOM suffered from being one too many "slow moving dark [rides]" in EPCOT Center, but if Disney had kept those omnimovers and simply added some thrills instead of replacing the original masterpieces, and if Disney had kept the park's original aesthetic instead of jumping into the garish 90s, Epcot would be in fantastic shape today.
TBH, in the early 90s, the Imagineers couldn't foresee how the clean, minimal lines of 70s and 80s monolith architecture would be the true future, and the whirling colors of the late 80s and early 90s would be considered tacky. But they really cut off the nose to spite the face.