Absolutely, I think the vast amount of information on the internet ruins some of the "mystique." On the other hand, it helps those of us who can't visit often prepare to make the best use of our vacations, by knowing ahead of time what to expect. As time goes by, touring Disney World requires more and more foreknowledge (e.g., knowing where character greetings will be found, knowing when and where to sign up for things like Jedi Training Academy, knowing whether an attraction has scary elements that the kids ought to be warned about). It's harder to stumble upon the magic by accident: you have to get a Fastpass, make an ADR, or camp out for 90 minutes for a good seat, all for a "scheduled appointment with the magic."
I certainly miss the days when I was a child, when you could just "show up" and discover what shows were going on, walk into a restaurant and eat there at the spur of the moment, and had to experience an attraction yourself to see what it was all about. For better or for worse, if you want to get the most out of a Disney World vacation now, you need to approach it like an impending war: set your objectives, do your recon, choose your battle plans, learn the layout, familiarize yourself with the language, culture and customs of the natives, make arrangements to feed the troops, etc. I do try to limit viewing on-ride videos of anything I haven't seen before to preserve some element of surprise, but that's about as much "Disney innocence" as I can preserve without feeling that I've under-prepared.
