I recently bought this A1267 display from the recycled goods store, and I have absolutely no idea what this thing is on the stand.
My best guess is a mount, but it doesn’t look like it would fit on my VESA mount. I tried to search up A1267 mount images but found nothing that matches this.
I can’t imagine any other use for this thing. You should be able to see from the side if the stand is cracked. But taking it apart and putting back together seems pretty straightforward as well, no special tools required it seems.