Having seen the wheeled wonders come down from the overhead bins in heavy turbulence when the compartment doors opened, I do have to wonder how airlines from the Land of Frivolous Litigation can allow such a practice, which airlines from other countries have identified as unacceptable due to the dangers involved.
It seemed that the same passengers who put on a pathetic show of lifting their bags, expecting assistance from others, were also unable to muster the strength to close the baggage compartment latches fully. Funny, they always seem to have strength in their elbows to push ahead of the rest of us on deplaning. But not enough strength in their mouth muscles to say "Excuse me" when running over others' feet with said wheels.