The same public where you're constantly leaving your fingerprints, where your face is being constantly recorded and scanned into multiple facial recognition systems, where your DNA is being constantly shed? When everything needed to unlock your phone can be taken off of your corpse or just reconstructed from what you leave everywhere you go you're not really "secure".
If your threat model includes abduction and torture, then you probably don’t need to worry about your rights to begin with, and probably shouldn’t be using a regular cell phone for anything important
It's like using a password that can never be reset, writing it on a stack of post-it notes, then tearing one off and throwing it over your shoulder every 10 feet you travel
Facial recognition cameras don’t use or give you the same data that FaceID’s 3D depth mapping FaceID uses, besides few cameras get close enough to practically reconstruct a useful 3D mask that could fool it.