Hungarian Jews arriving at Auschwitz-Birkenau, May 26,1944
I think the actions speak for themselves.
It is one thing to cook (passively working), and another thing entirely to actively separate people from their property (according to him, only he knows the true level of his activity) and send them to their deaths, even as a juvenile.
We understand “him or me” self preservation but there is another level where one goes from passively working to actively participating.