Can I just say, on a side note that, personally, I do not mind at all someone pointing out someone's else' "tone" in an argument. Tone used does not necessarily mean you are wrong, but it CAN point out what a twat muffin you are being. I had been away for a while so wasn't up to date with some of the happenings, but I see now.
Everything is going fine in a thread, people disagree, yes, sometimes passionately, but they do so with a modicum of respect so we can all feel comfortable enough to continue the conversation. Then Aeon comes in, out of the blue, with his pretend reasonable-persona dripping with hidden scorn and ruins everything.
From that point on, anyone who may seem to agree with some of his posts because they have, for example, the same preference for a candidate, now feels attacked because the conversation has suddenly become an argument which will then turn into shit-flinging because everyone feels like the insults being thrown are meant for them. The people within this small community, all usually able to chat about emotionally charged subjects with respect, who all have different views, who are enjoying the debate/conversation either leave the discussion, or are sucked into this vortex of anger.
Does this seem about right?
In any case, for me at least, yes, tone is important. I'm not sure when or why it became irrelevant in a discussion. Unless of course, the people you are conversing with mean nothing to you.