Is it possible to exclude Windows Hello PIN as an unlock option when using biometrics

When setting up biometric authentication in iOS and Android, you also have to setup a device pin/password. In this regard Windows is no different to iOS and Android, and the link you have provided confirms the requirement to setup a device pin/password in if you want to setup biometrics in Windows). I think having a device pin/passcode for unlocking the device/operating system as a backup to biometrics is sensible.

But what I'm referring to is usage of the device authentication methods by the applications running on the device. Your iOS and Android apps handoff unlocking to device to device biometrics but they don't allow the device pin/passcode to unlock the app (even though it is compulsory to have a device pin/passcode if you want to use biometrics). But your Windows app does allow the device pin/passcode to unlock it. Why does this difference in behaviour exist? The link you provided doesn't explain this.

Thanks