I think the media may be getting it wrong about the return of fingerprint scanning being used to reintroduce TouchID. One way Apple could go with this is to move into a new security model where there are multiple things concurrently authenticating that you are who you are, and you are continuing to actively use the phone, and when it sense you may not be you, it can challenge you to authenticate.
In other words, you already unlocked your phone, you placed it on the table unlocked, and someone picked it up and started scrolling, but the fingerprint doesn’t match, it can then trigger faceID in the background to check that it is till you, without you even being conscious it’s happening. It then determines someone else is actually using your phone, at which point it will force you to hand it back to the owner to unlock with faceID or a password to continue using it.