Why not use good materials to build with?
As someone up thread pointed out, fairy tales are the basis of a lot of our culture, so removing them then removes people who have no access to them's ability to understand and interact with other works of art. It's like pulling the foundation out from under the house. In order for lots of other things to make sense, you have to understand fairy tales and their tropes - you are doing your children a cultural disservice to remove them entirely.
Hence we get updated, sanitised versions. So children can still learn basic story structure and the building blocks of our oral and literary heritage without having to read about Sleeping beauty being raped by the Prince.
However I think it is still very important to keep the older versions alive and kicking because there is a danger in removing them too. If we accept that old fairy stories are about teaching girls to love their husband even when he's abusive (Beauty and the Beast) or menstrual shame or the sin of vanity (the red shoes) or accepting unwanted advances (Sleeping Beauty, Snow White, The Frog Prince) or the importance of virginity (The Princess and the Pea) then these are part of the history of the oppression of women. To get rid of them is to erase what actually happened. And if all you're left with is Anna from Frozen and Rapunzel from tangled who are princesses fit for the 21st century who go out and get shit done, then people will start asking why did real women do 'so little' in the past? if we lose sight that women were actively encouraged to stay home and do as they were told, societal brainwashing to go along with economic and legal barriers that they faced, then people (men) will come to the conclusion that women not achieving much in history is because women are crap. Fairy tales in their original form are evidence of systemic oppression - like hell we should just give that away. But obviously they are no longer appropriate versions to read to children.
But they are good stories, and they are repeated and reflected throughout so much, that to lose them would mean losing a full understanding of loads of other bits of culture. We would be intellectually poorer for it.
So ladybird books and Disney sanitise them - make them more appropriate, making it clear that both Sleeping Beauty and Snow White were in love with the princes who kissed them - so these were welcome kisses. Belle isn't taken to the castle by her father against her will as the price for stealing a rose. She chooses to go, she chooses to stay and when it doesn't suit her she leaves, and she chooses to go back. Twice. Cinderella gets her much deserved happy ending - but nothing horrible happens to her family, there is no punishment for the women who weren't good and kind and amenable, they get to continue as they were before.
I really struggle to understand what is unfeminist about the golden age/renaissance era Disney films - unless it's that these women are traditionally feminine, and fall in love with men. But there is nothing wrong with them being traditionally feminine. Thinking that they need to be more assertive or -god I hate this word - 'feisty' just means that you don't think being gentle and kind and hardworking are good enough traits in themselves - that they would be more valuable if they demonstrated more 'masculine' qualities. And that is wrong. It makes me think of the To Kill a Mockingbird quote 'I wanted you to see what real courage is, instead of getting the idea that courage is a man with a gun in his hand. It's knowing that you're licked before you begin, but you begin anyway and you see it through no matter what.'
Snow white runs away from home and builds a new life for herself.
Cinderella lives through the most awful bullying and poor treatment, suffers bereavements but refuses to be made a victim and insists on seeing the good in people.
Beauty has the courage to stand up to the Beast, and ask for what she wants (in every version I've ever read, she always gets to go home to her father)
The Little Mermaid takes a risk and goes for what she wants. In the original she doesn't get it, and that is a perfectly good warning to not give everything up for a man. In the Disney version, she fails and has to fight for what she wants but comes good in the end.
Sleeping Beauty is rather passive, but she is actually in the rare position of not really being the protagonist despite being the titular character - the fairies are the main characters - and they get shit done!
These are brave brave women, living in a time when there was very little opportunity for women. They should be celebrated for that! It's just we're so programmed to view bravery as man with a sword, or a daring rescue against a dragon, that we don't take time to appreciate the quiet courage and dignity of these women. That is something for us to overcome - not the Disney Princesses.
There are loads of positive feminist messages in the sanitised version of fairy tales, if you look for them - instead of just assuming pretty girl gets rescued by man - must be bad. And then the old versions are an important part of history, women's history in particular, as well as precious links to ancient oral traditions.
Talk of banning any book is never good. You can boycott it, you can protest about it, you can raise awareness of why its problematic - but for god's sake don't get rid of it. I might not like what Mein Kampf has to say, but I defend it's right to exist and other people's right to read it. And if that book of evil earns it's place in literary canon, then there is no excuse for getting rid of fairy tales.