Agreed. But the point they're making (wittingly or unwittingly) isn't "they're both directly and indirectly responsible for the rise of the surveillance state."
The fundamental point is: "Both parties are the same because of this one issue." And that position is reductive to the point of being indistinguishable from the positions of centrists and conservatives, both of which often prefer easy-to-digest, broad-stroke politics over wrestling with the nuances.