So long as the airlines rigidly enforce carryon size restrictions. It was bad enough when baggage was free, now you’ve got people slamming steamer trunks in the overhead cabinets just to avoid the fees.
Unless the flight is sufficiently empty, Ryanair staff often walk around the gate and get anyone with a large or heavy-looking bag to put it on a scale.
(They have the scales available before check-in, so it's reasonably fair.)
