Which is probably why the Dahl copyright holders are doing this(1). Not to appease some sort of modern sensibilities, but to make money. Apparently they think the investment will pay off.
(1) a less money-focused reason could be because they truly believe these stories deserve to be shared in the future, and see the things they changed as barriers to that goal while of little import to the message. But again, they think this step will "pay off" - in continued popularity / enduring part of culture then.
Yeah, I agree that the copyright holders are acting rationally, but long term this will destroy our democracies. A key premise of Fahrenheit 451 is that they end up with sanctioned book burnings because of something boring like political correctness.