Sub $100 AND the same SOC as in the latest Pro iPhone? Seriously doubt that one.

If both of your Apple TV and your phone are logged in to the same youtube-account then you can use the phone as a remote and whatever you open on the phone will instead play on the Apple TV. You can also airplay it if you’re on an iphone but idk why you would want to do that when the ATV has a perfectly capable youtube-app.