Not really, that's just a common fallacy perpetuated from the ones that see their political views represented by the heavy handed moderation around HN, or the ones that actually don't pay attention to what is going on in HN.
Moderators in HN heavily editorialize the Front Page by removing the flags from some posts and flagging other highly voted ones by the community.
They do the same to comments that don't follow their personal views even when those comments don't break any of the guidelines but happen to be against the moderators political views.
Bottom line: You might be deceived by the appearances here, or you might be actually enjoying so see anyone that disagrees with you being shut up in HN, but factually, it's not the "community" of HN that is deciding what is acceptable, it's largely the moderators of HN.