Cinderella doesn't need to say bullying and cruelty to others is wrong. You pick that up from the story (and the idea virtue is rewarded, even if it is slow!). Okay this doesn't just apply to children but for many it is their first venture into the wonderful world of reading (as it was for me). All stories show the world we know to some extent via their characters. We may not be able to identify with the strange world portrayed but we can do so with the character that's battling for justice against the odds.
What is remarkable about fairytales is their bluntness at times. They call evil out for what it is and not all of them end happily either (which is also a lesson in life we all need to learn but fairytales are a great way of getting that point across reasonably gently).
I grimace when people dismiss something as "just a fairytale". There is nothing "just" about fairytales. They have to be well crafted stories to hold children's attention for a start. When people are asked to name the first book or story they read, they often refer to children's classics, including the fairytales.
Image Credit: All images in the slideshow come from free to use website, Pixabay.