This isn't even a no-true-scotsman argument, but if all that comes to mind when communism comes up is Soviet dictatorship, the cold war propaganda worked.
I guess the point of the poster above is that the word communism just confuses things in the initial statement — it’s just a dictatorship. Socialists and communists fairly uniquely believe in workplace democracy.
- People actually living and working in communes.
- Abolition of private property (note: this is not the same as personal property).
- Extreme redistribution and/or equality in wealth/income.
I'm sure that this isn't a perfect heuristic; however, I think it's often useful for detecting when someone is trying to describe something as communism in order to make it look bad.