Asked and answered: I cited the specific book that referenced it, among others.
For the record, I am more than capable of recognizing the positive aspects of the USSR - I just don't like the simple-minded good vs bad binary thinking that often plagues these discussions.
Edit: user I was replying to says they cited multiple sources. Just wanted to say they only cited one author - who's more a story-teller than a historian - while handwaving about "many authors saying it's true" without listing anyone. They completely rely on hearsay and vibes for evidence and not concrete source material for their worldview.