That was my thought...
"Somehow they got the Plex app installed..."
Jellyfin somehow works on freaking Roku, even, and WELL. Just give the URL to connect to, they pick a profile, and boom, "Netflix who?".
(Also, unlike Netflix, it's not BOMBARDING my PiHole with a gazillion telemetry requests per freaking second holy crap NF calm down. It's a treat when I have something I want to watch on my Jellyfin drives lol.)