The book hasn’t been banned, it’s just not been selected as a required or optional text in a new English qualification for Welsh schools. Steinbeck is a wonderful author and story-teller, and his stories provide a useful insight into America’s difficult recent past in regards to racial segregation (as well as other issues such as oppression of the poor). America is an important country, and it’s useful to understand why it remains such a damaged society with deep racial divides even today, but it’s not Wales is it.