I like the enthusiasm, but I’m sure you realize why Jellyfin is more suitable for mainstream use. The pretty web UI, user management, watch tracking and device-specific clients are what makes the software actually useful if you want to serve media to “normal” people.

It’s unlikely you can prevent install or remove entire features when Microsoft does not want you to. Depends on how baked-in they make it. More often than not it’s a game of whack-a-mole where you find out what toggles are available that disable stuff you do not want.

More unwanted bloat to disable, I guess.