This news broke fairly recently, as the family had wanted it kept private. It is a powerful story from an age that continually fuels our passions. Doing the right thing is often not the easiest choice, but it is worth fighting for.
Leica was permitted leniencies, because they were a successful, international company. They stayed successful because they supported the National Socialists' war effort. It was their optics in those Panzers. The Luftwaffe used Leica optics as well.
Perhaps it is because of the family having navigated on both sides of the line that they chose to keep the records closed regarding all the "employees" and their families, whom they succeeded in sending to their foreign offices from 1933 to 1939. There will always be controversy surrounding this era.