You convinced me that they lack skill.
The clothing does often look good. In folio 16v ( https://www.medievalists.net/wp-content/uploads/2024/12/Vill... ), it's been overdone and appears to be far wrinklier than fabric could support, suggesting that Jesus is embedded in some kind of strange plant.
The faces are terrible in all cases.
In general, perspective is off, anatomy is off, and you get shown things that aren't physically possible.
Are you aware there are artistic styles beyond photorealism?
Yes, but in that case, as this article argues, you'd expect something that looked good. https://static.wikia.nocookie.net/teentitans/images/e/e3/TTO...
The Honnecourt illustrations strongly suggest that (a) photorealism is the goal, but (b) Honnecourt doesn't know how to draw it. He does things like place a person's right eye at a different angle to the rest of the face than the left eye has. But hey, how likely is it that viewers will notice a malformed human face?
Teen titans as reference xD stop it you're killing me