There has actually been a pretty monumental shift in Russian election meddling tactics in the last 8 years. Previously we had the troll army, in which the primary operating tactic of their bot farms were to pose as Americans (as well as Poles, Czechs, Moldovans, Ukrainians, Brits, etc.) but push Russian propaganda. Those bot farms were fairly easy to spot and ban, and there was a ton of focus on it after the 2016 election, so that strategy was short lived.
Since then, Russia has shifted a lot closer to Chinese style tactics, and now have a "goblin" army (contrasted with their troll army). This group no longer pushes the narratives themselves, but rather uses seemingly mindless engagement interactions like scrolling, upvoting, clicking on comments, replying to comments with LLMs, etc., in order to game what the social media algorithms show people. They merely push the narratives of actual Americans (not easily bannable bots) who happen to push views that are either in line with Russian propaganda, or rhetoric that Russian intelligence views as being harmful to the US. These techniques work spectacularly well for two reasons: the dopamine boost to users who say abominable shit as a way of encouraging them to do more, and as a morale-killer to people who might oppose such abominable shit but see how "popular" it is.
https://www.bruegel.org/first-glance/russian-internet-outage...