Your observation that there are not trolls on steemit is not valid. Is my actions step by step will be in the logs, sure! Each action has been recorded. But that is not what is in question here! Suppose I create a story or submit a story. Then, a troll come along and makes a nonsense comment spoofing the story. I can just delete the entire story and post again. Not very practicable but effective. However, trolls do not give up that easy! They have nothing to do and they like to hang around obstructing the post! People do not feel very motivated to comment or participate in a post that has been trolled. Have the ability to remove the troll is a right that must be given to the post owner.