Literally nothing changes for me, the plex server host, or any of the people streaming from my server though. Nothing at all. Nothing is ruined, nothing has started to be ruined. I don’t have to pay any more money, none of my friends and family have to pay any money.

And no, jellyfin won’t do anything like this because they don’t have control over how you use it and don’t force their cloud on you.

Until Jellyfin no longer maintain it and change to a closed source product that they want to make money from.

Plex’s own “cloud” that they “force” on you is part of what makes Plex the success that it is, and it costs them money to maintain.