> It implies that disagreements or criticism of the US are coming from russian disinformation agents

Does it? The post in question observed 2 things:

1. Russia invests a lot in disinformation campaigns and spreading (conflicting, but that is part of their doctrine) narratives.

2. Bothsidisms and False Equivalency are some of the common tools in muddying the information sphere.

Is your point of contention with the truthfulness of either of these observations, or with their proximity to each other?

Yes obviously. it doesn't take much in the way of literacy to understand the point being made by putting those statements next to eachother. The point is to invalidate whatever criticism is being made of the imperium