The book has already been censored once by the author (1978) and the website shows the censored version. The backlash is presumably more about the original uncensored work.

The original line was "A Chinaman who eats with sticks" along with an image of a man with yellow skin.

https://twitter.com/dangelno/status/1367129947882590208/phot...

Yes it would be wrong to edit the book.