If the person doesn't exist in the first place, why do you need proof of age?
Serious question.
If I drew an animated cartoon of a woman stripping off, I wouldn't need to prove her age - Its a cartoon. Likewise if I hired a fantastic artist to draw a photo realistic cartoon of a woman stripping off, it would be the same...
So if a computer draws a realistic image of a woman stripping off, what's the difference?
Its still not a living breathing sentient real person - Its just an animated drawing...
Like I said, serious question.