This message is a part of the ongoing Russian information attack against Poland, which includes the spread of such false messages alleging that Poland was responsible for WWII and the Holocaust. According to the Polish Institute of National Remembrance, the declassified documents published by Russia do not bring any particularly significant new information on Soviet operations during 1944-1945. The institute also states that during this period, the Soviet Union, at the same time as fighting Germany, pursued a consistent policy aimed at preventing the reconstruction of the independent Republic of Poland.
The Soviet documents falsely present the Polish Home Army self-defence actions against Soviet enslavement, massive repression and murders by the NKVD and other formations in the parts of Poland occupied by the USSR as "terrorist activities", hiding the entire Soviet policy against Poland's independence in 1944-1945.
The Polish Minister of Culture, Piotr Gliński, reacted to the Russian publication of the declassified archive materials with an appeal for the return of national treasures and archives taken by the USSR from Poland during and after WWII.
See other examples of Russian historical revisionism concerning this issue such as Signing of the Molotov-Ribbentrop pact thwarted the UK’s expansionist plans in Europe, The Molotov-Ribbentrop pact did not violate the rights of the Polish state and the shift of all blame for WWII outbreak at the Ribbentrop-Molotov pact the best example of manipulation of history.