I know cartoon anatomy is wildly different from any applicable anatomy but this dude strikes me as not really having a good grasp of anatomy at all, so features are out of proportion in a way that doesnt seem intentional. Usually with cartoons characters will have disproportional anatomy but it will follow a sort of set of tropes to hint at a particular character. Like you could have a big buff guy and he'll have maybe a triangular overall contour with small beady eyes and a small upper head, a wide, huge jaw, wide shoulders and chest, but tiny legs and feet. This dude takes that, and applies it to normal people and tries to keep the rest of the anatomy the same so you have the Pewdiepie character with a huge fucking mouth and a cartoon head, but then the rest of it is trying to represent normal human anatomy, and stiff anatomy at that, and the juxtaposition is really disturbing.