Saying this thread is chaff is not ridiculing your opinion, it's just saying the whole thread belongs in a different forum. What's being discussed has nothing to do with the stated purpose of this particular heading ("On The Web - personal websites or other Web resources that will be informative to lightweight backpackers"), ergo it is CHAFF.
But I suppose a certain amount of paranoia is not surprising from someone who is convinced that the current administration, or even the previous one, is equivalent to Hitler, Stalin, and the rest of the guys whose pictures you posted, (really? have you ever even KNOWN someone who lived in a country run by one of those guys? you REALLY think your situation in the U.S. is equivalent? oh, please) and is coming to take all our guns away. And yes, I probably just ridiculed your opinions, but you've been essentially ridiculing plenty of other people's opinions that coincide with mine, so I figure we're even.
And that's what we do in Chaff when someone takes a position...either side with them or against them. I don't see it happening more by one side than the other, though sometimes there are more people on one side of an issue than the other. But being only human, I think we all tend to see the other side as ridiculing us and our valid opinions, whereas we are just stating the truth on our side and correcting the other side's misconceptions. That tendency is probably no different between liberals and conservatives.