A friend had the brilliant idea of asking one of those image AIs to draw a diagram of the anatomy of a human hand, since that seems to be the thing they have the most trouble drawing. The AI managed then produced these diagrams, which are frankly impressive in some ways, while 100 % confirming that they cannot draw human hands. Never mind getting the number of fingers right, look at these skeletal structures and tell me there aren't deeper issues at work.
It also does not have a sense of the image as a 3d object like we do. It can not and does not understand that a limb continues in a set direction when it passes behind an object, coming out the other side of the object as you would expect. This causes a lot of the problems with hands if a gesture causes fingers to pass behind other fingers, it has no idea which finger is what and where the fingers should be popping back into visibility. This leads to finger monstrosities.
These AI need to be able to process an image as an idea, they need to understand what a hand is and what makes up a hand, they need to understand and recognise what the human is in an image and what parts make up a human.
...And here is them understanding what makes up a hand.
It's all bones and fingers. Just add more as needed.
Bit idea: Medical AI that insists the problem causing your stomach ache is that you do not have enough fingers.