I find this very telling about the reviewer. When the Russians (or Soviets) show gallows humor, or are simply bizarre or we (in the West) want to read dark undertones in what they wrote: hell yes, it's just like I thought, the Soviet Union must have been a constant nightmare!
When they write in a self congratulatory tone, or simply praise their scientists: boring, let's skip that.
It is a way to self-select a vision of what the Soviet era must have been: all depressing, all zany, all the time.
The normal, they-were-humans-like-us bits get ignored because they are boring, confirming and reinforcing our preexisting ideas.