Creators on this instance are required to only upload their own content. While it's fine if they mirror their own videos from elsewhere, such as YouTube, the ultimate goal is to be intentional with your videos in this space. To be clear: videos can contain fragments of other people's content (as is popular in critical analysis videos), but we don't really want to just mirror stuff and add to the garbage pile that is PeerTube's sprawling firehose of useless content.