Anything to backup your claims about Eastern Europeans living in the 80s? Anything I can read? Not trying to refute your argument, but I'm just curious to see things from their perspective.
Remember Iraq WMDs? At the time, there was almost complete consensus on them being real and necessitating war. Now, we know it was entirely made up. The same is true of many movements and countries that oppose (for various reasons) US and EU imperialism.
If you don't have a significant sample of Eastern Europeans at hand, here's an article summarising the situation (https://thecommunists.org/2019/07/26/news/workers-eastern- europe-former-ussr-prefer-socialism/). It references many sources that I recommend you read. Many of the sources are capitalist and contain clear propaganda to that end, but also contain useful raw data.