If I had my way, then Dahl's books would be in the public domain by now and anyone could publish any version they wanted. But if we're going to have copyright extend for decades after the author's death then the copyright holders are going to be the ones deciding whether to make edits. Maybe they make good decisions, or maybe they make dumb ones (I think some of the edits here are pretty clumsy and pointless, and it seems likely if Dahl were alive he'd object to at least some of them), but since Dahl is dead the people who he left the rights to are going to have to make these calls much as Dahl did when he was alive. It's totally fine to criticize them, but the idea that books never get changed or that Dahl's books never got changed when he was alive is just not true.