There are no blocking units. POWs do not talk about that. There is one sketchy video. It is not real. They really want to fight this war, based on their indoctrination and upbringing, thinking how much better they are and how Ukrainians and everyone else is below them and they deserve everything.
Even during the battle for Stalingrad, when it was actually used/invented, was it not used in the way people portray it in the current war.