/3/ - 3DCG

>>556139
stylization is based on reality, and in reality the nasolabial fold contributes to the major shapes of the face. I know that you can barely see it, thats the point. Light works to show forms, and since the light shows the form of the nasolabial at all in that image, that means that it still is noticeable. In 3d you model for multiple lighting setups, so in certain lightings -- without the nasolabial fold the face will look weird. You can see it in pic related on stylized characters, which makes those lighting setups not look weird.
Your version with no indication of it makes the cheeks disappear and it looks weird.