That article does not seem to have been updated given the recent massive trove of information provided by the Twitter files. [1] A group, "Hamilton 68", was a central source on the "Russian trolls" narrative. They were widely cited, frequently as an exclusive source, by media and congressmen alike. They had a secret list of 644 "Russian trolls" whom they surveilled and used to populate their dashboard on the latest trends in Russian disinformation.
The problem is that those were mostly just 644 seemingly random, primarily conservative, "real" Western individuals. For instance David Horowitz [2] was a "Russian troll." Others included individuals who had written books on the US constitution, a conservative news editor, and so on. So basically whatever conservative individuals were discussing was labeled as "Russian disinformation" which the media (and congress) then simply took at face value and repeated.
Incidentally Twitter also knew that the "Russian disinformation" stuff was, itself, largely disinformation. They were able to determine Hamilton's entire list by simply looking at their API calls. While there was lively internal debate about whether they should go public with this information or not, and they did push back in private, they ultimately chose to remain publicly silent - just as the mainstream media is now also doing, leaving me to link to rando sites in lieu of where these stories ought be.
The one thing I'm certain about is that reading the book, 20 years from now, about whatever's happening now - is going to be interesting.
[1] - https://www.racket.news/p/move-over-jayson-blair-meet-hamilt...
[2] - https://en.wikipedia.org/wiki/David_Horowitz