I'm not saying you're wrong, I'm explaining to you that people don't differentiate between left and liberal, especially in the US.

People have difficulty differentiating liberal from left. Also there are plenty of leftists that would happily condemn Dahl's works for these reasons, but it seems more likely they would just advocate for books not written by a racist, rather than amending the works of a long dead person.

I lived in a house with a French exchange student who once came home from a house party and proudly told us that he'd "pet an octopus!" He meant opossum.

Same in French.