Very few companies actually care about security over flashy marketing features.
(also: if it's semi secure then being able to build trust based on that means the other part is PR I guess, outrageous as well?)
Apple's Face ID takes a 2-dimensional infrared image of your face as well as projects 30,000 IR dots to form a 3D depth map of the face. It feeds this into a NN in a separate Secure Enclave processor to determine whether the face is attentive and authorised. I believe they also implement specific NNs just to perform anti-spoofing, both physical and digital.
This is contrasted to Samsung and Microsoft's solutions which take a picture and try to match it.
Apple's Platform Security Guide on Face & Touch ID [0] is an interesting read.
[0]: https://support.apple.com/en-gb/guide/security/sec067eb0c9e/...
https://docs.microsoft.com/en-us/windows-hardware/design/dev...
Still nowhere near as secure as they make out though
Also the younger you are the less likely it is to differentiate.
It's completely outrageous that MS thought it was acceptable to do facial recognition using a basic webcam.