I've been using Plex since 2014 (i.e. before there was a need for privacy settings) and can personally attest to all of these sharing features being opt-out rat

I've been using Plex since 2014 (i.e. before there was a need for privacy settings) and can personally attest to all of these sharing features being opt-out rather than opt-in. I was not pleased to see viewing history randomly showing up in my inbox (thankfully I don't have anything embarrassing) and then needing to search how to opt out of sharing and analytic stuff.