I think what he is saying is quite true but in other words.
Transmog gives the ilusion of fulfillment and acomplishement that didn't existed in previous expansions.
In videogames you are suposed to start a game by looking bad and progressively start looking good and feel completely acomplished at the END.
This basic form of incentive (negative reinforcement) like it or not was removed from the game.
But ofcourse, not everyone likes "negative reinforcement"...i personally like it...it created a quest mid expansion for me. A quest to start looking cool instead of looking like a clown.