How is this article relevant to the suitcase size?
It describes a shoe accidentally falling out of a bag. That can happen with a bag well within the dimensions...
My original post covered two topics - one, the delay caused by most passengers having their correct allowance and two the safety implications of heavy weights being placed in the overheads.
The article is entirely relevant because of the severity of injury a lightweight item caused. Now imagaine a 23kg trolley bag had fallen, or a ski boot - the pressure would have been a hundred times worse and may have killed the woman.
It is time the cabin baggage allowances were reviewed.