Been using Jellyfin daily for over a year now with over 30TB of media. It's been wonderful. It's not perfect like any OSS project, but it's better than every alternative I tried when standing up my media pipeline last year.
Two minutes of interface management and Plex doesn’t show anything but my own media either. (I would prefer it if Plex didn’t advertise its streaming content at all of course, but I’ve paid for my lifetime pass so I’m not contributing revenue)