No. The rule is about protecting a culture. Having a brief description on the front page is an eminently reasonable suggestion. Mitchell's response was a shallow dismissal of the person (calls out "you" five times in six sentences) and was against site guidelines.
Which culture would that be? Starting off a post with “I hate things… this is one of them”?
I think the discussion here would be different if the tone was more moderated. Seems like you’re dying on a hill for the right to be abrasive without consequence.