User blog comment:Neowitch/New Shichibukai/@comment-1454981-20111115152016/@comment-4620768-20111121165324

Just a few people know the truth about Kuma. For the vulgum pecus, he is still the infamous Tyrant, known for his brutality. So the World Governement has no reason to kick him out of the Shichibukaï. And for Bonney, she has some connections with the World Government and run away from it one time. I don't think they trust her enough to give her the title.