Re-writing, although not great, isn’t the same degree of censorship as carried out with book banning (or even burnings).
As ever it’s the RWNJ of the US who lead on book banings in the western world.
Classics of modern US and western literature like - to kill a mockingbird, animal farm, 1984, the handmaidens tale are regularly banned by school boards run by RW ‘Christian’ religious nuts.
The historical offensive use of characters/caricatures in literature and their removal/alteration, has been happening for years.
Just from my youth, Tintin in the Congo, is pretty offensive with its caricatures, other Tintin books have similar albeit generally lesser caricatures of other non western cultures.
Another comic book from my youth ‘lucky Luke’ - a cowboy - has had another subtle re-adjustment with his previous ubiquitous cigarette hanging from his lip replaced with a hay straw in reprints.
So, small re-writing is.. a reflection of adjustment of attitudes and progression. As long as the reason for it isn’t lost to history, eg whitewashing the past of its badness, then I see no issue.