Of course there was a difference between Treblinka, Birkenau and Buchenwald. And being there was safer than in Hamburg or Dresden or Kursk. But If you ever had experiences Nazi rule, hunger as I have, and the reaction that your mind and body demands of you, you would never call those putting up with it, voluntarily, as collaborating cowards., not all of them anyway.
Luck played a great part in your fate, you could be on trips to Sweden as a nanny, or be worked to death in a tunnel destined to build V2s. Sadly of course, the worst can be brought out in humans too, as it is even happening in wt land as we speak.