This is crazy! But I notice a few things that can differentiate between AI generated faces and real ones but they are really subtle.
Eyes, teeth, ears, and the occasional "google dream" like errors in the photo. The errors have that purple/multicolor whisps familiar to google dream images.
The eye's iris sometimes have an odd pattern, ears misshapened, and small errors in the teeth area.
Linux Geeks doing what Linux Geeks do..