Hey, it certainly was hideous, broken and inhumane, but come on, the Russian version of communism allowed for a lot of progress. Industrial and scientific both.
Pretty much anything that did not have to do with weaponry, and especially any of the social/philosophical sciences were far behind because they did (or could) go against the communist dogma.
Bersides, a lot of that industrial progress ewas built by Americans anyway, with USSR, at best, supplying slave labor.