It sounds as though this "show" is turning sex into a cross between a school lesson for children, where adults (strangers) instruct and demonstrate "things they should know", and a source of fun with adults (strangers) who sing jolly songs, with interactive rhythmic movements.
Leaving aside for a moment whether a young child does need to know the names and operational details of all the variations and perversions that inventive humans apply to each other or themselves, children of 5 are just starting to learn that teacher is always right (try telling a child that you know better than teacher . . ) When teacher gives them information, they are supposed to listen. When teacher wants them to do something, they do it. When teacher leads the singing, they join in. Bolshie 4-year-olds are moulded into co-operative 6 or 8 or 10 year olds
How will he/she react if in the coming months, some friendly acquaintance with less exalted motives talks to them one-to-one about one of those activities? If they illustrate their information with a demonstration? If they start a sing-song?
Children love doing the actions to songs. "One finger, one thumb", "Head shoulders knees and toes" "The wheels on the bus" and now, "Touch it, touch it!"
Will they recognise that they are being drawn into abuse, or will they join in the fun?