Should be retitled "airlines' mouthpiece finds one more way to self-serve and enhance airline revenue, causing inconvenience to passengers and harm to luggage manufacturers".
While newer and some refurbished aircraft are coming out with newer, larger bins to take carry-one loaded sideways, these guys are seeing how they can push more passengers who have learned to live with one carry-on and a personal item check bags in for increased airline revenue.
Of corse, this is a preliminary move, and it may yet not be adopted.