In fact, most of Walt Disney’s films were books adapted and changed and “modernized” without the consent of the original author. Rudyard Kipling’s The Jungle Book is disgustingly racist and imperialist. Disney modernized the story significantly by removing many of those themes (although adding a few “modern” racist tropes of their own).
No one calls those adaptations “cultural vandalism” though.
However, these new editions are effectively replacing the old ones. I don't so much mind them rewriting the books so long as the originals continue to be published. However, I don't expect that will be the case. Eventually, anyone going to a bookshop to buy one of Dahl's books will struggle to find the original version. That's a real shame, I think.
Paraphrasing from Dahl's 2010 biography but worth reading in full https://www.google.com.au/books/edition/Storyteller/fit6PwGW...
The National Association for the Advancement of Colored People (NAACP) objected to the original film version on the grounds that the book was racist ... they were adament that the title of the movie also had to change because they did not want it to promote the book.
Roald agreed to "de-negro" the Oompa-Loompas in both book and movie ... The movies title was altered to "Willy Wonka and the Chocolate Factory".