I'm already aware of the historic issues and I would just like to enjoy a nice mystery without getting the equivalent of a random anvil dropped on my head on page 241.

I like to know that things have been changed. As a child, thanks to different libraries, I had access to multiple versions of Mary Poppins and Charlie and the Chocolate Factory, and since I don't recall any of the revised editions including a note, it was extremely weird to me to pick up a book I knew and have something completely different randomly in the middle of the text. (I'm not confident, but I feel like I got the less racist version of Dahl first, but the less racist version of Travers second.)