Just to add my support for this request.
The current lockdown situation has kind of concentrated my mind that this is what’s missing from my UPC boxes.
Now I have to order Apple TV to share my Plex content on my son’s TV.
The other option is to buy him a new TV with the Plex app on, but that’s not exactly Umwelt freundlich.
Initially I was going to add another UPC box for him, so we have a standard set up on all TV’s.
Your loss I guess.