Not sure about communism, but your reasoning has nothing to do with the official explanation given by YT. The “dislike attacks” they speak of in this blog post were notoriously common on any video featuring a politician from the Democratic Party in the USA. I never saw it happen elsewhere with such consistency. Hope that clears things up.
If any of them all, YouTube knows how to disable content for a single country/region. Just deactivate the like/dislike counter for North America then.
I think those "dislike attacks" are a welcome argument to push a feature nobody is interested in, which mainly drives engagement by making it harder to find a good video and leads to more "clickthroughs".
https://blog.youtube/news-and-events/update-to-youtube/