Probably because these projects were implemented as real new Russian "concept cars", where everything turned out to be new: ideology, materials, means of defense, weapons.
In the new issue of the program "Military Acceptance" on the Zvezda TV channel, the authors decided to tell about a whole line of such promising concepts. This and high-speed helicopters, and heavy drone drone, and the new Russian aircraft carrier. But not these new items will be the main issue. The main will be the Main Directorate of Armaments - GUV. This is a division of the Ministry of Defense, of which the CIA is well aware, but few inside have heard of it.