Certainly many governments including the US, Israel, and Russia have been caught with troll farms, funding radical influencers, etc. I don't think it's far fetched to believe that a state actor is sowing discord within their own people. Just look at COINTELPRO for a good example of the FBI infiltrating and dividing leftist movements.

My main gripe is the jump from skepticism to conspiracy. Through a host of conspiracies, the right has eroded the concept of truth to the point that people only look to right-wing leaders for guidance. This is intentionally done to grab power from those that are more willing to deliberate evidence. I'm worried the left could fall victim to a similar fate if they get too ready to assume conspiracies must be true. If we assume without evidence, we could easily get swept up by a charismatic leader looking to tell us what we want to hear.