@FrancescaJ@bookstodon Y'know, I always feel like I have a hard time understanding that question. So when writing my own reviews - for fiction novels at least - I tend to interpret it as "is the plot largely driven by the main character's struggle to overcome their own character flaws?" (I'm sure there are other ways that the character's flaws could be a main focus of the novel, but I have a hard time imagining what they would be.)
Now, I don't know anything about this particular book, but I could imagine that if other people are thinking the same lines I would, in order to answer that question with a "yes" it's not enough for the main character to be a Nazi. He would have to perceive it as a flaw and work to overcome it, and that would have to drive the story. And maybe it does, I dunno... but if not, I understand answering "no" there.