Germany had similar offensives (op vivaldi) in dec 1944 and March 1945. Russia has a very obvious reason not to take ground despite having the ability: fear of nato intervention. It explains the 6-1 lopsided equipment losses without taking ground. And the "infiltration" tactics.
@Jonpy99 Its text. The only way to confirm casualties is visual confirmation of bodies, mass graves, cemeteries, footage of the casualty. That wont happen during the war. Using heavy equipment losses and adjusting for the vehicle:human ratio being higher for russia is a better method.
@Cat_Number_Nine The fall of youtube white nationalism has been a major blow. The requirement that you create prepared videos biased it towards quality content. People like ryan faulka nd zoomer historian