State what clearly? That you can use a passcode just like you can on an iPhone with TouchID? I think that's been understood for years. Nothing's changed: You choose whether to have your iPhone completely non-password protected, to have a password or passcode, and whether to setup the TouchID / FaceID.So you don’t have to use FaceID to unlock a phone that has it? Why can’t they just state that clearly?
It's all there in the settings. And Apple discusses how to setup passcodes and biometrics in support pages.
Use a passcode with your iPhone, iPad, or iPod touch
Learn how to set, use, and change a passcode on your iPhone, iPad, or iPod touch.
support.apple.com
Use Face ID on your iPhone or iPad Pro - Apple Support
Securely unlock your device, sign in to apps, and more.
support.apple.com