Agreed, but HN has set a pretty high standard for sourcing, much to its credit. I wouldn't feel bad about posting ideological material from the WSJ, National Review, or NYT, but I would never post Drudge, HuffPo, Breitbart, Slate, etc. to HN, even though I check them out regularly just to get the temperature of the national discourse, and get a heads up on those occasional outlier stories that they're ahead of the curve on.
Besides, the foaming at the mouth, politics as bloodsport commentary can be a kind of entertaining guilty pleasure, kind of like outsider art: http://en.wikipedia.org/wiki/Outsider_art