Dang's job is to keep HN aligned with its purpose, which is to be a place for discovering and discussing content that "gratifies one's intellectual curiosity".
That means flamewar sparks and anger-inciting comments about predictably-politically-charged topics simply don't belong.
It's a full-time job just doing that; fact-checking is not a service he has time to provide, and factuality doesn't greatly affect whether a comment is outside the guidelines (everyone makes mistakes, there's nothing wrong with that; it's how you express yourself that matters here).
It's not even about topics that are controversial; Dang has said many times that controversial topics are fine to be discussed here; they just have to be discussed in a way that gratifies curiosity (i.e., we can learn things from the discussion), rather than stirring up partisan rage.
That means flamewar sparks and anger-inciting comments about predictably-politically-charged topics simply don't belong.
It's a full-time job just doing that; fact-checking is not a service he has time to provide, and factuality doesn't greatly affect whether a comment is outside the guidelines (everyone makes mistakes, there's nothing wrong with that; it's how you express yourself that matters here).
It's not even about topics that are controversial; Dang has said many times that controversial topics are fine to be discussed here; they just have to be discussed in a way that gratifies curiosity (i.e., we can learn things from the discussion), rather than stirring up partisan rage.