All of your points are great, but don’t consider that I was an Apple TV+ subscriber, so I needed the tv+ app.
Jellyfin is one of my streaming sources, and I was intending to use the Swiftfin app on tvOS, along with tv+ app and apps for the other services I subscribe to. With Kodi I’m now just hitting my local library directly, and using the Kodi add ons for the other services I subscribe to.