I'm not a Dream Theater fan by any means, but I don't know why everyone's being such a fucking sourpuss over this. With their music the way it is, i'm sure switching the set up majorly every single night has to be quite a chore. I mean, 99% of other bands use the same setlist for every show during a single touring leg, which is i'm pretty sure what Rudess is talking about - one touring leg, not the entire cycle. If they started using that same setlist from tour to tour, then that'd be rather lame, but if that's not the case (I don't think it would be), I don't know why everyone is getting their panties in a twist.
And to the comment about fans wanting to be surprised about what's going to be played, there's a really simple solution for that: Don't look up setlists on the internet before your show. If you want to check it out because of your own curiosity, that's fine (I almost always do), but don't complain about not being surprised afterwards.