Norman Finkelstein, author of "The Holocaust Industry: Reflections on the Exploitation of Jewish Suffering"[1] coined that phrase. He lost ancestors to the Nazis.

[1] https://www.amazon.com/dp/B008GZ4J76/

I had never heard this term so I looked it up: the only usage of the term Google points to in the first couple pages are in specific reference to Norman Finkelstein's 2000 book of that name. The author himself lost family in the Holocaust.

I don't have an opinion on whether or not it's acceptable to say here, but thought it might be relevant context given that I didn't know what precisely the term implied.

EDIT: Whoops it looks like the parent commenter himself provided the context in between me starting and finishing this comment.