You can run Jellyfin side by side and slowly migrate everyone, starting from the most intelligent users (so you can catch anything that might be wrongly configured, etc.).
In the meantime, I hope that so many users are switching that we're going to get better native apps.
Berlusconi did the same 20 years ago in Italy, he made some journalists and TV personalities disappear completely from all TV channels. Trump is just following the same pattern.
Good luck installing Tailscale on my friends' LG webOS TVs.