The fact that the archives of the SPD (State Political Directorate of Russian Soviet Federative Socialist Republic) and the KGB (also known as Committee for State Security of the Soviet Union) are classified does not mean that human memory and alternative archives do not exist.
Such backwardness of a Russian state is not so surprising. After all, the serfdom ceased to exist in Russia after the British railway connecting all countries of Europe had been built. Back then, Russia could catch up to the European countries, but now, the gap is so enormous that it would take a couple of hundreds of years. Armenia lags behind no less, but unlike Russia, it is capable of quick recovery thanks to the creative genius of Armenians.
The only contradiction in the video is about the Bolsheviks allegedly annexing most of Armenia to the USSR. It is enough to look at the map presented in the video to understand who benefited from the series of massacres committed by the Turks and initiated under world powers such as Germany, England, the Russian Empire, and later the Russian Republic.
Yerevan (The Capital older than Rome) Concerning this topic (The War of the Russo-Turkish Tandem Against Armenia), watch from 39.40 minutes