Agreed, although I think what you're describing is how it'll be sold, yet most people will surreptitiously use it to indulge in fantasies with "normal" people which will be even more damaging.
Got a picture of that co-worker you like? Congrats, now you have him/her in some porn. Interesting times for sure and I think we'll see a lot of flak and fallout in people's personal lives from their creations, far more than we see from "typical" porn use now.
I'm actually looking forward to living in a world in which pornography is so tailored, specific, and effective, that it becomes mundane. Maybe we'll have some other things to talk about after the world gets it out of its system.
Or, we end up creating a new digital addiction that partitions a class of society into preferentially existing digitally. Maybe this can just be a precursor to a VR caste that we never see in reality.
People will have karma scores generated by the number of people using their characteristics for their virtual porn. The web will be autocrawled looking for updates to the score.
I think people who are "caught" today looking at generic porn would be seen in a far more negative light if they instead had porn with the babysitter's/co-worker's/boss's face on it. I think that would be relationship-ending rather than merely an embarrassment or a career blip.
You would need more than one picture for your training set.
A minor detail, but the reasons these early products are compelling is that they are based of a large corpus of HD images taken from different perspective and angles and include various expressions and even stills while the subject is talking or laughing or expressing different emotions that a single picture of your co-worker won't.
Got a picture of that co-worker you like? Congrats, now you have him/her in some porn. Interesting times for sure and I think we'll see a lot of flak and fallout in people's personal lives from their creations, far more than we see from "typical" porn use now.