User blog comment:SpiritedDreaming/RWBY: Attack on Kevin Tower Defense Game/@comment-47.199.140.177-20160916224634/@comment-26397825-20160916233536

It's a blanket rule. Allowing this sort of thing once opens the door for "but you let this happen before" scenarios, which can cause strife on the wiki and create a bad atmosphere. Again, while you may haveno problem withnothers hurting you, it's more to prevent future problems that may arise.