Off-Topic: Most stories about politics, or crime, or sports, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic. On-Topic: Anything that good hackers would find interesting.
This isnt just politics. This is a nuanced & complex view of the world. This is anthropoly that happens to involve poltitics.The anti-anything-at-all-political bias is way out of control, utterly unchecked, and absurd. [Ed: Im ok with this particular flagging, but it makes me so sad that some of the biggest & widest & most impactful parts of our world are off limits to discussion.]
A more productive thing to do is to look at why they still exist, what they do better than progressives (i.e. they build enduring societies, something that is not at all obvious progressivism does because of, for example, the extremely low birthrate in progressive societies). And figure out ways to improve progressivism from what these other societies are doing.
So, no. It is indeed true that the borg-mind flags only those political topics that induce cognitive dissonance in itself.