Images appear at random, & you need to reload the page to generate a new one.  If these images are computer generated, most of them are really good.  However, I noticed a couple of problems.  On some images, a partial image of another person's face can be seen next to the primary person's image.  The partial images I saw were severely distorted.  One had an eye near the chin, & another was "stretched", similar to what you might see in one of those funny carnival mirrors.  Yet another looked like a burn victim.  There were also a couple of images that looked androgynous (think "Pat" of SNL from years ago).  Finally, one other definitely was of a woman, but it looked like she had razor stubble above her lip & on her chin.  So it's far from perfect.

Is that it only creates one unique face. Hence why it won't be used en masse. It's easy to create such face via ai for one still. How about five photos with the same face in different positions and different facial expressions ? Not so easy anymore.  

 
What agencies (Asian ones) usually do is  take a model pic. Some lazier ones use them as is, most at least run them through some reverse image searches. Some will leave it as is, some will photoshop another head on and/or adjust some details. The way many plain reverse image searches work is through direct pixel comparisons or other base image composition values. So if you change enough of image composition, non-advanced image searches won't show this pic anymore.