He was an effective pilot... i'm sure he have a good number of stories that he could share and that are worth reading.
Without reading the book i can't say it's worth/not worth reading.
Calling this guy a hero may be not that fortunate. I woldn't call him "hero" IF he was strafing cililians... following orders is another story...
Don't get me wrong, i'm not familiar with his history and actions.
If you call him nazi (maybe that's true) you should call the same most (probably not all) LW pilots that took his part into WW2.
All of them were serving a bad case, prolly for different reasons each.
History is pretty strange folks.
One of my grandpas were fighting with Germans, then was captured and prisoned (he was building and maintaining a Cracow LW airfiled). Other one was fighting with Soviets at 17.09.39 and got captured by them. After a year he was traded by Germans for some russian POW's and got transfered to Germany... to some village. He said he mat a lot of good men there and it waqsn't a bad time for him.
Then a father of my uncle (who was a Pole... silesian to be exact) got forced to serve in a Wermach in 39 and was fighting with Poles, then with Soviets... he had no other choice he said... and i believe him... After the war he spent most of his life in Poland but in the early 90's he moved to Germany and till now he's living there pretty good for the money he is getting every month as a kind of retirement found for his fighting in Wermacht!
History is really strange