True faith results in knowing all aspects and possibilities, and still believing in what you believe.

Sort of yes, and sort of no. I completely agree with you for adults. But children are less likely to be capable of that level of thinking. If the stated purpose is to dissuade people from believing in God, I'm not likely to let my youngsters see it (or the sequels, which I understand is where the actual dissuasion begins).

When they are teens and more mature (read: more capable of abstract thought and analysis - not wrt behavior), they can do as they please. I studied up on a dozen religions when a teen and made up my own mind/heart and have no problem letting them make up theirs... when they are competent to do so.