A few years ago... when I was young I always say fils related to imaginary creatures and I liked them a lot. Sometimes I heard stories about that, only, when my grandfather or my grandmother told me.
Now, I'm an adult and I think that this is an interesting thing and I don0t see any problem for children to see the films or to listen to stories about imaginary creatures.
From my point of view, the legends are passed from generation to generation because people neve forget a legend that another person explained them.
In conclusioon I agree with that because I think it's a beautiful thing and it has't been lost from our society...