Earlier quoted context omitted.
This is almost certainly the correct answer. It might also be a generic dialog populated with a server-provided message. Apple TV definitely is not intended to require that you own another Apple device. Even the Apple TV+ subscription service is supported on other platforms like Roku ( https://www.roku.com/blog/apple-tv ). Apple has never required that you run the latest iOS to use iCloud (see minimum requirements on…
Except that he tried it and it didn’t work. There was no message to accept the TOS.
Edit: If you are responding to the part about accepting T&C on a Mac, I meant in the iCloud system settings panel, and not through the browser. (Though I would also expect that to work. The fact that it doesn't just underscores that this is a dumb bug.)