I would argue with that. Granted Rock Band Drums, and singing, is a much closer analog to the real thing than the guitar, but the fake guitar is not completely

I would argue with that. Granted Rock Band Drums, and singing, is a much closer analog to the real thing than the guitar, but the fake guitar is not completely useless for learning to play real guitar. I've played guitar off and on for about seven years. Rock band guitar has to some extent improved my sense of rhythm. I would also imagine that a beginner could improved his left hand(fret hand) dexterity and flexibility somewhat. Not enough to play bar-chords but maybe enough to play scales and cowboy chords without hand cramps. Not nearly the real thing but not entirely useless.