I disagree. I really enjoy this show and I can give the writers some creative license as a prequel for a show that's almost sixty years old.
Spock has to have a moment of crisis that brings him to the state of character he's in in TOS. I think there's plenty of room to breathe over the course of the show to allow that. I haven't watched The Cage in several years, so I don't exactly recall, however from what I do recall, Spock shows a lot more emotion in the pilot vs. the beginning of the series with Kirk.