I think there used to be an issue with pull out tabs. Tabs were left all over and lids were redesign to current style.
Yes. Actually we should go to to where you just punch a hole in with a key.
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman
Laws are spider-webs, which catch the little flies, but cannot hold the big ones. -Anacharsis