So both sides are guilty of straw-manning? I'd surmise that's the case with the vast majority of "conflicts" here, as the illustration contends.
I think the notion of 'sides' is a little misleading. Many things have no "sides", Many things have enormous numbers of "sides". There being exactly two sides mostly has the benefit of achieving the greatest drama and polarization. 
I think what I get from this comic is mostly a statement about the relative volume in self selecting forum not really having that much to do with representativeness. It's the loudmouths that drive the discussions, but they don't necessarily represent particular interests well. And, of course, it applies to all participants. (I know that I'm sometimes guilty of being outspoken relative to groups I could be considered a part of, sometimes to negative effect).
