Most of us just put up with the ads on our TVs, so seeing regular people hand the job to an AI agent is a fun signal (haha – “TV signal”), but I would try a launcher app before risking a bricked set. That being said, this is a new level of jailbreaking. I used to do that on various smartphones I had (SideKick, remember those, and the iPhone). A smart TV is a much simpler device, at least right now. And this definitely sounds like a fun project (maybe I have a spare smart TV sitting around to play with).
However, there is the legal side of this. You are essentially altering the software of some hardware. Sure, you may own the physical device, but you probably “agreed” to a license agreement when you first installed your device and its software. So, technically, you are violating your Terms of Service by doing this.
If you sign up for an account with the SmartTV provider, you may want to be careful. These providers could block you in the future, including new installs or other devices you may have logged into. But geez, yesterday I found out that two primary streaming apps on my Roku 4K box (HBO Max and Hulu) are no longer supported on the device, and I was prompted to “get a new device.” Where is my end of the Roku ToS on this?