Pamasich

Sounds like a torrent

Because it is torrenting. I clicked on the “More information” link in the popup and:

PeerTube uses the BitTorrent protocol to share bandwidth between users by default to help lower the load on the server. The main threat to your privacy induced by BitTorrent lies in your IP address being stored in the instance’s BitTorrent tracker as long as you download or watch the video.

Source

No idea about copyright though, but I also don’t quite understand the issue there that doesn’t apply to ActivityPub itself too.