I am not worried about an evil, monstrous AGI suddenly emerging and blowing away humanity, but I do worry about things like this. Hyperpornography seems a squarely apocalyptic trend.
One thing, though: it's squarely in the realm of hyperstimulus. We're a world of seagull chicks, (ahem) pecking at a red spot on a piece of cardboard because it's bigger than that of a real seagull Mom.
It's not that difficult to outperform the fairly mediocre state of typical human seduction, even in times of comfort and opportunity. When things go sideways it becomes all the more troublesome.