You’ve grasped the essence of posting to the SDMB, but not one of the complications.
You are certainly correct that a certain percentage of Dopers are knee-jerk morons who reflexively attack anything that isn’t as far out in space as they are. They do this for everything, and they make up a good percentage of the pilers-on and trolling, both here and in GD. They can be disregarded, or else take (as you do) moral satisfaction from mentally identifying the logical fallacies, strawman arguments, non sequiturs, special pleadings, and outright dishonesty on which they rely.
That isn’t all Dopers, however. There is a somewhat less vocal group of more reasonable Dopers, mostly but not exclusively moderate to conservative. The trick is to be able to listen to what they say without letting the other trolls drown them out, or annoy you to the point where you react to all the way you should to the idiots (hi, Princhester!).
Now it is probably true that the Usual Suspects treat hijacks differently. If someone starts a thread about Obama that is anything but adulatory, it won’t go two pages before some moron starts with the “McCain is stupid/Bush lied about Iraq/whatever” bull crap. And the Usual Suspects will welcome that warmly, as a respite from the difficult tasks of blackwhite thinking that are necessitated by the Obama personality cult. If all you want is to make them look stupid, well, it isn’t very hard, as long as you discount the automatic rants, Pittings, and screaming insults that substitute for thought in their world.
But if you want genuine discussion, you need to discount them without discounting people capable of genuine thought. They are not as common as the idiots, but they do exist.
Sure, the Obama lickspittles like Shayna and so forth are going to throw a tantrum if anyone dissents from the Beatitudes of St. Barack. But who cares? The answer (IMO) is not to hijack McCain threads but to stick to your guns in Obama threads.
The short version of all this is, if you want an easy win, engage with the trolls. If you want something worthwhile, whip the trolls into a frenzy by dissenting from the lockstep thinking that is all they are capable of, savor the howls, and then move on to real discourse. It isn’t easy, and I am not always successful at it, but it is a lot of fun to try.
My $.02 worth.
Regards,
Shodan