The problem is, again, nobody in USSR (and most likely, in Poland too) called these countries "Communist" and that people there lived under Communism.If Environmentalists run Canada for 50 years, everybody in the country calls Canada an "Environmentalist" country, and historians write about this period in Canadian history as "Environmentalist Canada"
Then yeah actually yes, that's exactly what I'd conclude. Even if someone in the back stands up and says "Well actually according to the dictionary that's not really true"
Building Communist society was an officially declared goal.
The terminology you use (specifically, the term communist countries) was coined in Western side of the Iron Curtain.