Yes, a server owner can see what is played. But this is sending email summaries about what I am watching on my own server. Even if that friend is not invited to my particular server, and even libraries that I haven’t shared with anyone.
It doesn’t even matter if I’m embarrassed by what it sends. That information is private. Period.
Plex starts narcing on its own users' anime and X-rated habits with an opt-out service, and it's going terribly (www.pcgamer.com)