I guess I never paid attention to closely to Rufus's final explanation as to what the Wyld Stallyns music did to the world. He said it helped the planet's align and allow peace and harmony to end war and poverty. And for them to be able to communicate with every species in the universe, including aliens and all animals on earth.
So they helped humanity form a higher level of consciousness. That's pretty deep!!!! I always just remembered the ending being something vague like they helped to save the world.
That is some pretty new age 5th dimension type stuff. Makes me appreciate this fun movie even more.