How did this come about?

I want to know. I used to have this silly habit of finding unusual, small things in larger product ecosystems and wondering how the person who makes them talks about himself at parties: “My company makes the little metal slugs at the top subway handles that keep them from moving too far,” or “you know those little plastic hooks that you clip onto bread bags to keep it fresh? yeah, that’s me.”
At some point, I may find the time to find out what these bread bag hooks are called and someone who makes them, but what intrigued me is the elaborate shape. Why all the edges? I can see the edges inside the hook area adding extra grip (though I kind of smile thinking of the meeting where that was decided), but the asymmetric indents out nubs on the outside? Couldn’t be affordance, since you got the hole an the groove at the top.
So much to learn . . .