I was surprised, but I liked the approach. Disney gets to say that someone might be upset, but we the viewers are empowered to see the content and make our own decision.
Disney gives us content that is often two or three generations of "thoughtful people who would never expose children to that" over and over. That was Walt's idea of "acculturating America."
https://www.neh.gov/humanities/2015/septemberoctober/iq/walt...
https://www.yahoo.com/entertainment/disney-accused-of-whitew...
https://www.panmacmillan.com/blogs/general/original-disney-s...
Tear the page out if you like.
Especially readers' club notes. Even Oprah's.
Then I give the books away when I'm finished. Want to read a book I had? I often edited and sometimes marked it up. That book is a living thing, used and passed around by people.
Or sometimes I throw them away to save everyone else the bother.
If there was a page with a warning in your book, you can do that. Then you have the book you wanted.
As long as the original is there and a publisher add some silly warning page I really don’t care.