Movies, videos and therefore Youtube are art. Once an artist releases his work to the public, it's no longer just "his" or "her" art. It belongs to everyone. With that in mind, can Youtubers even post "their" videos as OP when they are in fact no longer "their" video? 
Maybe this post seems a bit silly, but 'tis a silly thread.
Maybe this post seems a bit silly, but 'tis a silly thread.