Sounds like the typical leftist deflection to me. The priority here is to get honest debate out, not find out who is saying it. What does that really matter. I could give you a hundred examples of how a person can be harmed in their personal and professional relationships by simply stating their opinions in a mass media environment. I'm sure you can conjure up a few, yourself if you try.
"Comments tend to be less civil, carry less weight, and are less worthy of dialogue." According to who; you? I certainly draw my share of responses from your side and way too often those responses are nothing more than a bunch of childish name calling, stereotypes and, oh yes projection. But it gives us all a window into the liberal mind. So I say get yourself a handle and go for it.
Do you want to know what people are actually thinking or do you want to make them the issue so you can label them then attempt to marginalize them; as liberals are prone to do?