Your ex posts the photos/videos of you on Pornhub, or 4chan, or anywhere.
Someone uses facial recognition to match the photos to your social media profiles. And then you get doxxed, outed, and the photos are shared with all your friends and family.
A) Are you a "pornography actor" in this scenario, or someone who trusted the wrong person? Is everyone who has ever had nude photos or videos taken of them a "pornography actor"? B) Just because something is technically possible, does that mean it should be legal? Do the ethics or the thing ever come into play? C) Do you believe that that laws/regulations are only effective if they prevent someone from doing something, and not effective if they only punish after-the-fact? Are deterrent laws useless?
They should have a right for privacy.
Imagine you were a stripper or porn actress, your right to privacy wouldn't preclude someone recognizing you at the strip club or video.
Or suppose you went to the strip club or watched a video and then also happened to be on Facebook and saw the profile of someone you saw stripping at a strip club or in the video, matching the face and name in your head.
How is the slow case different fundamentally from the case where programming is used and throughput and speed is much higher and faster?
I mean would it be illegal for someone to just start going through Facebook profiles by hand trying to find an actress they just saw?
So, understand what your fetish means and how it can backfire. Any age will have its own problems like that.