I agree that it is important to have a full and complete historical record, but Netflix is interested in making money, and I recently read Charlie and the Chocolate Factory to my six year old and he loved it. So I started to read Charlie and the Glass Elevator to him and stopped only a few pages in when some very offensive caricatures of Chinese people talking in English showed up. And I haven't read my son any more Dahl since then, because I was genuinely shocked at what I had just read, stopped that book after that chapter, and went off to read something else instead, and haven't gotten around to James and the Giant Peach or Matilda again. It interrupted what could have been a lovely flow of Dahl books. So I can understand why the people who control the Dahl Company- and desperately want people like me to read his stories to people like my son- are stealth-editing them to kill the offensive stuff, so that I will buy more books, read them to my son, and then he will 30 years from now buy them and read them to his children because they have nostalgic value for him: they remind him of his dad reading to him.
This censorship isn't happening because of the iron hand of the state or anything like that. It's the result of people making choices within a capitalist system. It's because I have lots of great stories to choose from to read to my six year old, so why would I choose one that I have to explain lots of ugly bigotry? So Netflix is choosing to try and sand down those problems that might keep someone like me from reading the book to my kid, in a totally understandable way. And, as the rights owner trying to maximize revenue, that is their prerogative.