The Boy in Striped Pyjamas- Did John Boyne address the sensitive issue of the Holocaust appropriately?

In the book "The Boy In Striped Pyjamas," John Boyne the author, addressed the sensitive issue of the holocaust appropriately in most parts of the book. From the book, we can get an idea of what was going on in the minds of the Nazis and why they were cruel to the Jews.

The cruelty of the Nazis could be seen when a jew accidentally spilled the glass of wine which he was pouring for the Lieutenant. The Lieutenant pulled the Jew into the other room and beat him to death. Also, when one of the soldiers shot the dog which was barking too much, it showed that the Nazis were cold hearted people. To the Nazis, the Jews were animals. John Boyne showed these thoughts through Grettle, Bruno's elder sister. When Bruno asked Grettle why were the people in striped pyjamas were on the other side of the fence, she answered that they were not humans, they were animals.

I think John Boyne did not go into details of the Holocaust. How could the people not know about the gas chambers? How could they think that the smoke came from burning old clothes? Nevertheless, I enjoyed the story which made me more aware of what was happening during the holocaust.