It is plainly foolish to believe that only right wing groups are targeted by this kind of manipulation.
Particularly when the goal of KGB like entity is not necessarily to prop up one particular candidate or policy, but to generally sow discord. The fact that propaganda aligns with your views does not mean it isn't propaganda. We are not only particularly vulnerable, but playing right into these actors' hands when we pretend that only one side of our bipolar politics is subject to nefarious influence.
How sure are you that those performing these analyses are operating without bias? Also everything I've seen in this style begins with an explicitly right wing group and then looks for connections - but performing the analysis in such a style is unlikely to uncover left leaning efforts because the graph is probably nearly or totally disjoint.
It's very easy to conclusively show only one side of the story if no one reputable is looking into the other.
Not an exhaustive study, but Jestin Coler got in the fake news clickbait game in 2013. He said that liberal targeted stories never gained viral traction like conservative stories.
Particularly when the goal of KGB like entity is not necessarily to prop up one particular candidate or policy, but to generally sow discord. The fact that propaganda aligns with your views does not mean it isn't propaganda. We are not only particularly vulnerable, but playing right into these actors' hands when we pretend that only one side of our bipolar politics is subject to nefarious influence.