Fairy stories are problematic in all sorts of ways, and always have been. I think it's because they are an expression of people's gut feelings, which aren't always nice. Stepmothers, for example, are always wicked - an expression of a child's resentment towards someone they see as a usurper. Also, the good characters are always beautiful or handsome, while the wicked ones are usually ugly, and often deformed: not exactly a positive image of disability. I don't think they should be Bowdlerised, but some exposition would be appropriate when reading them to a child.
