Then he instantly respawns to hassle someone else/I don't have a Sniper or Champion friend to just call on demand to camp him CONSTANTLY/no one responds when I ask if anyone wants to help in the dungeon/not all of the jobs I run in on use high Flee to somewhat ignore him/etc.. etc., etc.
His 20 point value isn't worth the time it takes to stop and kill him (rather than focus on other enemies), and taking him out doesn't get him out of the way for x amount of time like the MVP. He is a waste of time. That is why we move him.