Nah, it was made to play videogames. It doesn't have a couch-first experience for media like Youtube or Jellyfin/Plex or insert paid streaming service here.

You can install clients for that stuff as non-steam games or deal with the clunkiness of navigating a web browser (also installed as a non-steam game), but it'll be miles behind an Android/Apple TV box or even something like a PS5 with media apps installed when it comes to UX.

If you're only looking for Jellyfin/Plex, doing the install process for the flatpak once to add it as a "game" should be good enough to match up to a console or TVOS. If you're looking for stuff like Youtube or Twitch or god forbid Netflix, using a browser with a remote/controller is way behind the experience of a dedicated app. Especially since SmartTube is the way you should be watching youtube in the living room and that's an Android app.