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/
Tell them to copy and paste that text from their phone to their TV and tell me how it goes. First, you gotta explain what apps are available on whatever TV they're using, though.
You also conveniently forget to mention the amount of work you need to setup a domain name that points to your Jellyfin server vs just telling them to sign up for a Plex account and tell you the email address they used.
Btw, the average person have no trouble signing up for an online account. How do you think people create an account for their social media, email address, and online shopping? Just google Plex and sign up. It's a familiar process for them, unlike dealing with URLs or VPN apps.