Teachings, of whatever quality, can be very interesting. But when people find things interesting it often just means that they crave information. The same thing can be seen in children. Before Western children go to sleep they like their mother or father to read them a story. The stories are very interesting, but most of them are garbage.
Children are very sensitive and have fantastic imaginations.
They also believe in things very strongly, so that what they hear makes a deep imprint on their minds. As long as the kid likes this story and falls asleep, that's okay. There is no idea of what kind of effect it is having on the child's mind, what result it is producing. The important thing is that he falls asleep quickly so that you can be free, free to go to sleep yourself or whatever. Just as long he doesn't make any noise.