Back when this was written, things were very different. Heck even 30 years ago, things were very different.
The Enlightenment fathers seemed to have this ideal that well reasoned thoughts would somehow find their way to the top of decision making, if only we would let people speak their minds.
What they don't seem to have given much thought is how commercial interests influence what message goes out, the scale of distribution, and lately the changing nature of who gets to talk.
I don't know what the solution is, but I do think there's a problem.