Try and look deeper. Sometimes an extreme example at the 99.9999th percentile can bound the problem.
In this case, it demonstrates how well people can separate work from home.
I would say the quote does not demonstrate the delineation between work and non-work. It's about in-group vs out-group bias. If the quote were about Nazi's coming home and hanging out with ethnically diverse friends, that would demonstrate considerable work vs home culture.
I'm sorry, but I disagree
Substantiate it if you're going to comment.
I don't even know where to begin. How did you come up with in group vs out group? Who in this is the in group?
German nationals vs other. They’re suggesting OP is drawing a false analogy by framing the compartmentalisation through employment and ignoring the ethnic divisions.