User blog comment:Strawberry Cupcake Kitten/Concerning the Edits/@comment-26897541-20151015215728/@comment-29789305-20151015220846

Yes! That's the exact reason why the cleanup is taking place. The admins are creating a new, more reliable category system, and were tried of redundant categories because they add more pages on the wiki we don't need.

For future reference, we'll be sticking with plural categories, so "rebels, Royals, females" etc.