That's amazing and scary. I went to the site out of curiosity and in some of the generated images you can see faults but then others can really fool you like the one I'm attaching here.
Whatever controls this must have a massive library of images and colors to formulate each face. I don't quite agree that they can say the face does not exist, its likely a lot of these photos do look like someone in real life!
We interrupt This Person Does Not Exist to share correct from past times:
Today is: 25th August (GMT), in history on the 25th of August, 1916 AD the following birth happened:
Erich Von Stroheim, Jr.: Actor / director (Napoleon, Sunset Blvd)