This message is part of the Kremlin’s policy of historical revisionism – it tries to promote the idea that there was no Soviet occupation of the Baltic states and that the Molotov-Ribbentrop pact did not cause the division of East and Central Europe between the USSR and Nazi Germany, causing WWII.
See similar cases on the Baltic states and the Soviet occupation here and here.
The claim that Estonia could not have been occupied by the USSR unless it was an ally of Nazi Germany is illogical. As a result of WWII, the USSR de facto occupied not only former German allies such as Romania, Bulgaria and Hungary, but also several countries, which were neutral (Baltic states) or faced direct German aggression (Poland, Czechoslovakia).
On the 23rd of August, 1939, Soviet Union and Nazi Germany signed a non-aggression (Molotov-Ribbentrop) pact, whose secret protocols divided the territories belonging to Poland, Lithuania, Latvia, Estonia, Finland, and Romania into Soviet and Nazi spheres of influence. Contrary to the claims of the pro-Kremlin media, the re-capturing of the Baltic States did not bring freedom, but Soviet repressions and occupation, which lasted for 50 years. The estimated war and occupation deaths are at 90,000 in Estonia, 180,000 in Latvia, and 250,000 in Lithuania. Furthermore, It has been estimated that between 1946 and 1953 deportations and guerrilla deaths reached 95,000 in Estonia, 125,000 in Latvia, and 310,000 in Lithuania.