"Don't use your fingerprint to lock/unlock devices."
"Use a long passphrase to lock your devices."
Seems touch id and face id is exactly what security experts tell you not to do.
Those are recommendations for a specific group of highly targeted individuals in specific situations. It's not "basic security", it's "basic security for people who have such damaging information on certain subjects that they may be killed for it".
For the general population, TouchID and FaceID are more secure than the most common alternative (which tends to be no passcode at all) and secure enough that common criminals aren't going to bother with it.
Stopping nation-states from intercepting your data and using it as a flimsy basis for your murder isn't something an average person needs to worry about on a day to day basis.