I'm baffled by this statement; this is just way, way off. Radiator Springs Racers will appeal to any theme park fan with a pulse. As for the other rides, they won't be E tickets, but from the concept art, I think most/all will enjoy them.It's what happens when Disney caters to only children. Carsland is being designed and built specifically for kids. Big Mistake.
It really doesn't matter whether or not you liked the movie. If the rides are as exciting as they promise to be, your level of enjoyment of the movie is irrelevant. Personally, I wasn't crazy about the movie either, but I'm jazzed about the ride technology that will provide experiences unlike any others at DLR.
A few more examples. How many on Mice Chat have seen Song of the South? Hardly anyone. OK, how many love Splash Mountain? Most of us, no doubt. Same deal with Mr. Toad. I don't like the Disney movie Peter Pan that much, but I love the ride. I love Pinocchio the movie, but the ride is not as good as Peter Pan. Many here love Star Wars, but are tired of Star Tours. A lot of people who've never read a Spider Man comic still love the ride at Universal. I've never seen the Mummy movies, but I love Revenge of the Mummy at IOA.
I could go on and on with examples, but you get the drift. You may be somewhat more likely to enjoy a ride because you liked the movie, but i think most people can judge a ride on its own merits, regardless of their feelings about the source material.