Siri lock phone with "Whose phone is this" doesn't work

Looking at multiple articles it looks like some variation of asking Siri "Whose phone is this" would cause a contact information to show, and force passcode rather than face ID for next unlock. I'm trying this with iOS 17.1.1 on iPhone 15 Max and regardless how I formulate it, it allows me to unlock with face ID, and doesn't require passcode.

Is this feature still available? Is this region specific? Any specific configuration to enable it? Or any other term that would cause iPhone to require passcode without physical access to hold the power and sound buttons together?