I absolutely agree that showing certain racist depictions to children can create biases. But is the solution really to ban the whole story? I said it in other comments but with similar cases, publishers just changed illustrations or words in a text instead of unpublishing it. Dr Seuss Enterprise holds the copyright and has every right to just update the books.

In none of those books the actual story is racist. In nearly all cases there's not even a single racist line in the text. Just the illustrations are.