It does make you wonder what was going on, given the issue was known-about for over two years prior, with the initial quick-fix suggestion by Boeing: a pretty simple "fill the hole up with silicon".
You give an idiot a written procedure that he may never deviate from and you can pay that idiot as little as you like because the job requires no skill.
I particularly felt sorry for the Mech 2 checking the "40" new memos on his ipad, one of which was the wrong-hole alert.