Rob Griffiths, a God amongst OS X users and erstwhile editor of the sadly-missed OS X Hints site, offers a neat little trick for easier password entry on the new Apple TV:
Yes, that’s the third-gen Apple TV’s password entry screen, on my fourth-gen Apple TV. Just how did I get it to appear? Very easily, though it took me a bit to figure out exactly how I did it. Here’s how:
To use the old-style password entry screen on the new Apple TV, wake the Apple TV using the old silver remote, and don’t touch the new Siri remote.