There is a clear reason - to make them uncomfortable. Nobody forced them to work there, and it is obvious to everyone what kind of future they are building there. If you exchange your soul for a good paycheck, this is just what you get.
The alternative is "Oh, you work at Schutzstaffel? That's cool!". That he has done is morally correct.
The alternative is "Oh, you work at Schutzstaffel? That's cool!". That he has done is morally correct.