Opinion: The Holocaust Just Got More Shocking

[MH]

I didn't have any trouble accessing the article though.

Had the cookies disabled and forgot about it.

Yes it seems that it is all about documenting the whole network behind this all.
As the article says:

Auschwitz and a handful of other concentration camps have come to symbolize the Nazi killing machine in the public consciousness. Likewise, the Nazi system for imprisoning Jewish families in hometown ghettos has become associated with a single site — the Warsaw Ghetto, famous for the 1943 uprising. But these sites, infamous though they are, represent only a minuscule fraction of the entire German network, the new research makes painfully clear.