You can disable it client-side if you, the viewer, don't want your ip visible to the peers. As it's opt-out, most people won't do it, so the host can still rea

You can disable it client-side if you, the viewer, don't want your ip visible to the peers. As it's opt-out, most people won't do it, so the host can still reap the benefit of the p2p system. Aside from that, another goal of peertube is the ability to federate instances together so that a search on one site can return results from all federated ones. The hope is to build a decentralised, federated youtube competitor.