Apparently some variant of the "not for export" statement is attributed to Adolf Hitler in
the fraudulent Hitler-Bormann Documents.
Greg Johnson stepped in it, not only by quoting from a fraudulent source but by giving an interpretation of "not for export" that is blatant off-the-cuff speculation reflecting no research:
“The National Socialist doctrine, as I have always proclaimed, is not for export. It was conceived for the German people” (Hitler-Bormann Documents, Feb. 21, 1945). What he means is that the ideas behind National Socialism may be universally and eternally true, but the National Socialist movement — its political platforms, symbolism, and other external trappings — are the products of a particular time and place.
Thus spake Greg Johnson. Piled higher and Deeper, yes.