That puts the onus of fixing the issues with the game/setting on the players, which is a great deal of work for them. The point of releasing a setting book is so players don’t have to do that kind of work.Or...just ignore the parts out of the old one that you don't like?
But the old material isn’t being changed. It still exists, exactly as it ever did. The new version is a new creation, inspired by the original.Things are what they are. The evolution of ideas should lie in new creation, not revisionism.
To the people that like something as it is, changing it is disrespectful, and gains you nothing that you couldn't accomplish better by making something new.
It's not only mean-spirited, it's sub-optimal.