Text:
I consent to Plex to: (i) sell certain personal information (hashed emails, advertising identifiers) to third-parties for advertising and marketing purposes; and (ii) store and/or access certain personal information (advertising identifiers, IP address, content being watched) on my device(s) and share that information with Plex’s advertising partners. This data is used to deliver personalised ads and content, ad and content measurement, audience insights and product development. Your consent applies to all devices on which you have Plex installed. You can withdraw your consent at any time in Account Settings or using this page.
Soure: https://www.plex.tv/vendors/ (Might have to clear cache)
Can also read about the changes here: https://www.plex.tv/about/privacy-legal/


No, Plex lets you invite friends to your server with a link they can click and sign up. Then they can type a code into their TV app or login to a browser and watch basically like a standard streaming setup they already probably have used.
Jellyfin is less familiar. Arguably not much more difficult but people aren’t always rational. The unfamiliar is often intimidating.
Can’t you just send your link to them over SMS, IM, or email? Is the main difference that you can do this from the UI?
I guess entering a code on the TV is pretty cool though. Maybe I’ll poke around in the Jellyfin community to see what the interest is in such a feature, because it should be possible w/ minimal hosting costs.