It's official support document on Nintendo's official website about their newest console. There's not "posted on" date so it's current. Maybe it's not required

It's official support document on Nintendo's official website about their newest console. There's not "posted on" date so it's current. Maybe it's not required but it's recommended by Nintendo which is bad and it would still be bad 5 years ago on lunch of the console. It's not like in 2017 it was OK to open all ports on your router.