Sorry, should have been more specific. They may teach you stuff, but that is not their *goal*. This is probably true of most guides taking people up the DC though.
Again, this is hearsay. I don't have any personal experience.
Edit: Put another way, there are people who hire guides because they want to become more competent climbers, and there are people who hire guides because they want to get to the top. From what I have heard, RMI caters to the latter. I don't think there is anything wrong with that, but it's something to keep in mind depending on what your expectations are.