But its not dead? If it was, it wouldn't be available on the iPhone 8, the other handsets in their lineup or the MBP. I don't see any reason why they can't have both systems available given the framework in the OS is the same.
We're all aware of the rumours around getting TouchID working on the iPhone X. But there were also rumours where the TouchID sensor was getting moved to the back and there's also the possibility that Apple being Apple like a challenge and believe they can improve the state of facial recognition and become the gold standard for it like they did with TouchID.
I suspect the truth is an amalgam of all of those things. Plus, its another thing where they're damned if they do, damned if they don't. There's been people wondering why Apple haven't done facial recognition before now, but some people would never be happy.
I think TouchID is a near perfect implementation of a system. I can also see some potential advantages to the facial tracking that's going on and I can see some times where its going to be a quicker way of checking for notifications without even touching your phone.
If the Apple Watch didn't exist, i'd be much more gutted about losing TouchID as its the integration with Apple Pay and contactless payment which is the big time saver for me. Contactless payment is supported so widely in the UK that I use it multiple times every day, but I now use my watch for that which only needs the watch to be unlocked/authenticated.