Common language is essential to understanding for a conversation to move forward. Case in point, I want to know what the USSR did well and I want to know what their failures were, so we can make an attempt at a better socialist experiment and prevent a Stalin from cropping up. An important part of that is seeing past the decades of propaganda and loaded language in the coverage of Western media. Seeking that kind of knowledge is known as scientific socialism. More than a few people call that “tanky”, despite not fitting the definition of “unequivocally supports totalitarianism”.