Everyone involved in the fall of the USSR has spent the last 35 years justifying their participation. They blamed all the hardship after the fall on the communists not the capitalists who stole everything. The worse the current situation was the more they lied about how horrible the USSR was. The kids who grew up in late stage and post USSR took everything they heard about the USSR as true when the people telling them were lying to themselves to convince themselves that they made the right choice. There was no alternative voices because people who were against the break up were silenced.
The schools and curriculum were taken over by liberal zealots who taught false history. Like how Kalas the EU's foreign relations person says ahistorical stuff like "russia has invaded europe unprovoked 9 times in the last 100 years." She is too stupid to make that up, she is just repeating 10th grade history. Just like how american schools teach the story of Indigenous peoples sharing their food with the settlers at the first thanksgiving or how "usa won the second world war."
Propaganda and indoctrination.