they are not taught to be good, graceful and kind-hearted. Disney made them that.
it is unfair to children to be attached to these fictional characters where they long to be that good. and when appearance matters, what they instill to children unconsciously is that everything may go as fancily as it may be.
as little as they are, they have their own standards and they call it dream, fantasy. it may not hurt but the standards of having all these may lead them to thinking that at the end of being "perfect" a prince-like man would end up whisking them off their feet, which is hardly possible. men are naturally jerk and "unstable" even women who dreamed are imperfect.
this reality is far from Disney. but we know we can be best in our own ways and to different things we learn and that's what makes us who we really are.