"The symbolism was heavy handed, and puerile in parts"

I'm not sure if I agree with that. What example would you give?

Frankly, the talk of "allegory" and "parable" make it sound like Lewis committed some sort of crime. Fiction, especially fantasy, has dealt with mythology and religion from the very beginning. What is the harm if Lewis did the same?   Again, I really did not read that into it - if I had not heard the complaints before I saw the film I would not have given it a second thought.

Again, it is no big deal. The film did not try to convert anyones beliefs.