Yah, I was confused for some reason. It's more equivalent to the kinds of things popular for various schoolchildren to draw. When I was growing up there was a funky S everyone drew. Then we stopped, because someone said it was a gang or Satanic sign or something... IIRC, I've since read there's no consensus on how it originated, but it's just a cultural thing people doodle.
The only reason I remembered hehenomoheji is because I remember reading about Blanca- in Japanese games/art she's often depicted with the hehenomoheji face. But to people outside of Japan it's just a super weird face.
EDIT:
This is the S. It's... sometimes known as the "middle-school S" so I think it's a pretty solid comparison
EDIT #2: I KNOW why I was confused! I was mentally combining the hehenomoheji with the
goroawase I learned about from the latest Pokemon games! Where meanings are assigned to numbers based on similarities to in pronunciation or, I think sometimes, how something looks written out. That's why I was thinking it had some meaning, but the face is a totally different thing.