<a href="https://framablog.org/2021/11/30/peertube-v4-more-power-to-help-you-present-your-videos/" target="_blank" class="bottom-link"> Read the blog post </a>
No. In December 2020, the 618 instances listed on our <a target="_blank" rel="noopener noreferrer" href="https://instances.joinpeertube.org/instances">public index</a> host ~1% videos tagged as NSFW (i. e. the content is sensitive, which could be something else than pornography).
Anyone with a modicum of technical skills can host a PeerTube server, aka an instance. Each instance hosts its users and their videos. In this way, <strong>every instance is created, moderated and maintained independently by various administrators.</strong>
You can still watch from your account videos hosted by other instances though if the administrator of your instance had previously connected it with other instances.