Seriously, this is barbaric. Especially the toy story and rugrats ones. It is just some crazy assumption, and honestly even if it wasn't, it's not like we need to know our childhoods were based off of sad sad stories about broken families and dead babies.
And in Rapunzel, the witch, after exiling her into the wild, knocks the prince off the tower to land in a briar patch. The thorns blind him and he wanders aimlessly through the wilderness. Until Rapunzel finds him and her tears bring back his sight.