I can understand the need, especially with kids books, to update them to keep parents willing to buy them. I own some of the original Hardy Boys books, and I won't be reading them to my kids. On the other hand, the Little House on the Prairie books contain things that go against modern sensibilities but I would prefer to keep unchanged due to the historical nature of the books.

I don't know what the right balance is, but it seems the recent Dahl changes missed the mark.