I don't think the ride expected you not to know any of that information beforehand. What was special about WoM (which can apply to most rides) was that it created a physical environment to be immsersed in. That's not something you can get from just reading a book or watching a video. Being immersed in an impressive physical environment is also why even a "book report ride" can be an incredible experience if executed properly.
Plus it was a humorous ride, it was unique because it didn't take itself too seriously and actually pokes fun at our struggles. Much like the first few scenes in Horizons. It had a ton of character and charm to it. The classic stylized Marc Davis designs probably contributed to this.
Spaceship Earth, Horizons, Imagination (original) and World of Motion were some of my favorite rides of all time. And I would be VERY hard pressed to choose a top favorite from that group (Imagination is one I think I sometimes miss the most, not even because it was objectively the "best" ride with the most elaborate scenery and large amounts of animatronics, but because it sort of represented everything Disney was to me). But you could not get me to decide which one of those four were best. They were all wonderful.