Mathis tries to manipulate the Luther Memo (p.7 of .pdf, p.56 of ETC.), curiously claiming that it supports the false claim that the phrase 'final solution' meant extermination of Jews ... without providing any evidence, of course.
As expected, Mathis willfully ignores The Schelberger Document below:
"Mr Reich Minister Lammers informed me that the Führer had repeatedly declared to him that he wants to hear that the Solution of the Jewish Problem has been postponed until after the war is over. That being so, the current discussions are of purely theoretical value, in Mr Reich Minister Lammers' opinion. He will moreover take pains to ensure that, whatever else happens, no fundamental decisions are taken without his knowledge in consequence of a surprise briefing by any third party."
Note that at a HQ dinner July 24, 1942 Hitler said he will tackle Jewish problem ...
"nach Beendigung des Krieges" (after the war's over)
The 'Luther Memo' actually confirms the contents of The Schlegelberger Document.
The Luther Memo is a document that provides a summary of German Jewish population policies as of August, 1942. It references, by enclosure, about a dozen other documents, including the July 1941 Goering letter and the Wannsee Conference minutes, and provides a connected narrative to that point.
It does not describe extermination, but rather ghettoization in the East and labor utilization. It describes the nature of what the official German policy actually was. Desperate True Believers reference it usually by claiming that is is all "code words / euphemisms"" ... laughable.
It was introduced, along with the other documents, during Military Tribunal IV, Case 11 (NMT 11). AKA U.S. vs. Weizaecker (Ministries, or Wilhelmstrasse, Case). This was the last, or second to last NMT trial, and the documentation provided for this trial represented the "last chance" at the story by the American prosecutors. Therefore it is a goldmine of information.