In my opinion, the fact that so much of the head is cut out to the point where its only real purpose is to achieve the smallest possible head makes it no better than the other examples listed. While it might not use scattered geometry or obvious notches in the same way, the end goal is the same: to manipulate how the head appears and functions beyond its intended design. That said, I understand where the line is being drawn here, and at the very least, it’s clear that moderators are recognizing this kind of modification as a violation under the current policy.