The point is, they can easily reach in and get some feed without stomping around in it and kicking it over. The pan is a heavy metal, powder coated pan from Goodwill, so it is hard to knock over.
Of course, new ways of doing things often come with problems you don't figure on at first. This has been in service a week and so far so good. Time will tell if it is a good solution or if those chickens will find a way to kick it over and stomp in it.