No, only the hypocrisy inherent in people who rant and rave about religious indoctrination as practiced by Christianity, but who will still give their children a colouring book of demon seals because it is what they themselves believe in. There is no difference between the two, though every black magician will deny it.
Children will always express interest in what their parents believe, whether that is going to church, and praying to Jesus, or to a personal altar and praying to Lucifer. Only if a child expresses a greater interest in demons and magick on their own should something like this colouring book be given, if one is to respect a child’s freedom of choice.
In my personal opinion, a child could best be introduced to basic esoteric principles through something like the Law of Attraction, the techniques of which use a child’s natural ability to imagine and pretend, but which do not inherently contain dogma regarding specific deities.