I understand you can dismiss that with "There is always a feeling of this-time-is-different", but what happens when it's truly different? Have you set a line for yourself of when it will be different or are you the frog telling everyone else that the water's not that hot? Or are you claiming there is no line and even if there is an all out civil war you won’t want any discussion of it on this site?
I'm not saying that your argument is wrong—I would have to know the future in order to say that, which I don't. All I can do is give the reasons why the counterargument holds more sway from an HN-admin point of view. (Which, btw, is not some sort of disagreement about the politics of this story or other stories.)