I glanced at their history and it seems that, yes, they are Russian, and a lot of their posts seem to have some anti-US sentiment, but automatically saying that makes them a member of the troll farm is a stretch. I see plenty of other Europeans, especially on sites like reddit, openly hating on the US. Hell, there are plenty of people from the US who do that. Unless I'm missing something glaring from their post history, which maybe I am, I don't think it's fair to say "this person is Russian, they are clearly a paid troll and should be banned."