At least in the Dahl case, they're explicitly trying to change the tone of the works, and not just the "content" -- whatever that word is supposed to mean in the context of literature.

Everybody's family is different, but my childhood self would have been pretty disillusioned to discover my parents censoring books on my behalf. I really can't see how that's a good lesson for the kids, especially when you can just buy contemporary works that are as PC/woke (or not) as you want them to be.