It's a fascinating exercise in antrhopology to see otherwise smart people confidently discuss the mind of people most of them have had no exposure to in person. Having spoken to a variety of people across the very broad spectrum of left-wing thought, ranging from libertarian marxists opposing the very existence of a state, to hardline marxism-leninists who thought the former group belonged in labour camps, I find the idea of a singular "communist mind" as ridiculous as you.
All actual communist societies work the same way, so it's clearly possible to generalize.
...or as the post-'68 West-German joke goes: "When two leftists meet, 3 splinter groups are formed", doesn't quite roll off the tounge like the German version "Treffen sich zwei Linke: bilden sich 3 Splittergruppen."