I think exolymph did a good job of explaining why people care when she referred to "the punchy use of language that makes Dahl's work so wonderful and entertaining" (https://news.ycombinator.com/item?id=34850273). Some of these edits cross well over into Bowdlerism. They're also surprisingly extensive. That alone is interesting!

Dahl was a transgressive writer even for his own day - at least I've always had that impression. His deliciously macabre imagination combined with the sharpness of his wit is just what makes his books so good—like an Edward Gorey for kids, but not too much for kids. So some of these edits are artistically consequential, the same way that the Bowdlers' "Family Shakespeare" was.