Because CTM is a clip show whereas MMU was about making memories. I could give a crap about whether the photos on the castle are of actual guests or taken that day. I'd be fine with them being actors or models. Anyways, the show was about making memories & your family. It drew on those heartstrings whereas CTM is just a waste of my damn time.
Jon Hamm & Mad Men sum it up pretty well here.
OK, you totally lost me when you played a clip from the most overrated show in TV today. I think I fell asleep as soon as Don Draper opened his mouth. ... And for those folks who say the Spirit isn't always truthful, well, I do admit that when I see Matt Weiner at industry events that I ALWAYS lie and tell him how great the show is (but that is just the LA way).
So, as to your point, I thought the original show was dreadful and making guests a part of it was a marketing gimmick. Of course, the only reason the show was approved was because of the pics and PhotoPass people explaining how it would sell more packages.
The current show is wonderful. Disney music, projections and a little pyro at the end. Yet, most fanbois would rather watch the Move It, Shake it, Celebrate It show (no, not talking the gay film here). No idea why.