There have been thousands upon thousands upon thousands of children's books written in the last sixty years. Leave the classics the fuck alone, especially when the authors are unable to defend their work.
Part of reading these books as a child or adolescent is being introduced to the cultural contexts of other times (and perhaps places). When a modern child reads a Victorian children's book, for example, they pick up pretty quickly that it's coming from a different cultural context. And this is a great way to learn about some of the more 'confronting' aspects of other cultural contexts in a pretty non-threatening way (they're just words on a page).
People act like this is the end of Dahls legacy, yet his stories have probably been discussed more in the past 24 hours than the past few years combined.
I recommend the book Graveyard clay on the death on languages, and how the dead are still as chatty as the living- in many ways the dead are harder to silence.
Funny examples you list there, where reinterpretations still happen after 2000+ years.
The approach in your comment is very pop culture or mainstream religion view of this, not an actual, historical one.
It is worthwhile to meditate on Nassim Nicholas Taleb's idea that the most intolerant minority tends to win.