The argument goes both ways. The basis for this video is the scenario where someone writes a completely rational, calm and accurately presented post, and idiots reply to it. Is not always the case.
My feeling is there are a lot of posts that appear here that *may* have a decent point behind them. The trouble is they're presented in such a way to obscure the point, hyperbole + exaggeration, presenting things as true which clearly aren't , and just plain rudeness end up not painting a picture of an issue with the game, but more a picture of the poster, of an agenda, or that the poster is twisting the truth. Combine that with an regular stream of such posts and it's not surprising folk will reply with a similar tone.
Not excusing the behaviour, it's just this video makes some assumptions that are not necessarily applicable in a number of the cases here. My feeling is on this forum a calm rational reasoned posts will get you decent replies (with maybe the odd "bad" reply), while an angry, rude, hyperbole laden post will get you exactly the same back (with the odd calm reply from some of the more patient posters).
It's almost the flipside of this argument, mostly I tend to think it starts with OP, not with the reply.