There is nothing in this link about personal attacks. "Be civil" is as close as it gets. "you're thinking too narrowly" is only slightly less civil than "You are literally clueless", which is something people say, face to face (see the bit after being civil?), frequently.
The statement "you are clueless" in response to "you are thinking too narrowly" is hardly the "height of incivility", especially when the comment of thinking narrowly was off base by a long way. The word "civil" is hardly well defined in the first place.
You are wrong, didn't take into account the context, pulled the trigger too quickly, and now won't back off of it. This is the worst type of moderation.
