She thought she was being very philosophical and compassionate. But by diluting the guilt to something vague she was absolving the people who did it.
Like some others, I disagree with your take.
Humans are blood thirsty. Death is in our genes. We kill others for whatever justification we can put in a poem, political speech or religious writing.
Sure, Germans did it and they paid for it. Still the atrocities of WW2 was a collective effort, so to speak, of all mankind, including the ALL victim nations. Of course, this approach is not very usable for lawsuits and financial gain, so individualizing the culprits is but a tactical move.
Other than on a philosophical level, serious mistakes have been made by politicians, which allowed Nazism to thrive, and kept refugees from reaching the safety of some countries. And these were not Germans at all.