UoE in that form was doomed. But we still have, like, energy in our world, it wasn't an 80s phenomenon that went of fashion that no-one uses now. We still generate it and we must look to the future and find new ways of generating it. Basically, the concept of Universe of Energy was sound. But rather than update it, they'd rather scrap it and convert it to be an advertisement for a movie franchise. Who knows, if they'd updated it instead, it might have inspired a young person to go into a energy-related research career.
Granted, Cosmic Rewind, behind the gloss, is about the Big Bang, the creation of the universe and all the energy in it (though of course it's no longer an energy pavilion). But how many people take that on board? It could easily have been (and could still be, if GotG ever goes out of fashion) exactly the same ride inside but a story about energy and our future instead. The GotG could even have been hosts.
You could argue that the attraction teaches maths, probability and the odds of which song out the six you're going to get, people are always discussing this...