I did enjoy that particular factoid. Numbers from 1938 to 1948ish according to some prominent Jewish organization that conducted the census, IIRC? It's hard to know how accurate the count was of course. It was an attempt at a global figure and such large projects always have a bit of uncertainty built in.

I question it because it is documented that 1.2 million Jews were indeed killed in the German camps. The Germans kept meticulous records. The Jews who did the historical research attempting to verify it were well-trained researchers with a strong personal motive to find and identify the 6 million. These were friends and family, and they wanted to do justice to their memory by learning the truth of their fate and seeking justice for them. They found 1.2 million.

When they started with 11 million and we know for a fact that 1.2 million (at least) died in the camps alone, let alone as combat casualties fighting for the allies, or from natural causes as any population does, I expect to see 9-9.5 million on the back end. They didn't have that many babies to get 12 million. So something's not adding up. I have to question the sources here. I know the 6 million figure was bunk, but what about the 11M and 12M before and after numbers? Bunk, also?