It's too late. Way too late. Loads of ex-Nazis were let off - more than let off, they held prominent positions in industry - in the decades following the war. That was one of the main reasons for the anger of the likes of the RAF. And now, decades after that, they decide to go after some low-level functionaries?
Germany is of course a very very different place now, but those the German state are prosecuting for being Nazis were at the time working for the German state. I find it hard to square that, especially at this distance in time and in light of the history of failing to act earlier. Not to mention that they are singling out the odd person here and there when millions were complicit.