Not the person you are asking, but as someone who shares a similar feeling of distrust to authority, I'll provide you with my point of view:
It's not just the picture, it's the databases and the veracity of mass data base mining that can come from it.
To better explain:
Right now powerful entities have files on me. My actives. And yours. The collection, use and sharing of these files between these powerful entities violate our rights, even if only in intent (though arguably more)
Right now these files are mostly loosely created, probabilistic based associations.
If you've ever used any ID verification systems, you'd understand this (think lexisnexis)
So, they sort of know, but don't fully. Good. Even if these entities have shown the desire to violate my rights, they can't do it well because of issues related to data collection. I like that.
So the way I see these advancements is... great, now these entities are getting mass fed pictures that are 99.999% a correct association. This could be used for facial recognition software tie ins to say, CCTV systems. As stated, you need more than one picture to increase accuracy.
I don't want them to have it.
Right now, their interest (in violating my rights for profit and power) and my interest (in staking claim to the rights my forebearers fought for) are oposite.