Rookie already had Dirt, and you just can't allow someone who has the skill to take on the entire Data Hive with only Dare as back up to get captured. You don't get rid of character cause he had no personality, you build on that personality and tell people "This is why X is a mute". Unlike B312, who's death was understandable because he was the only one left, and had a purpose. The Rookies death was just a large "fu­ck you" .