Dude facial recognition catches the wrong people all the time. It is not as infallible as they make it out to be and this is just adding an entire extra level of mistakes they can make.
Facial recognition tech is bogus and because of its technical limitations, unintentionally(?) racist. (ie the cameras are not designed well to take good photo/video of dark skin, leading to high false positive rates when it comes to dark-skinned people) edit: even further, the cameras are often too small of a resolution for quality matching.
Further, facial reconstruction based on DNA isn’t exactly super accurate on its own.