This article states that the injured passengers were injured by falling hand luggage from OHCs. Perhaps that is why most airlines restrict hand luggage to 5 kg, rather than 10kg allowed by FR.
Some, maybe, but not "most". See
here or
here. I just checked the official hand luggage pages of 3 airlines at random (
BA,
EasyJet,
BMI) and found no mention of weight limits on any of them.
I wonder why so many people feel the need to have a pop at FR even when it concerns things for which MOL cannot possibly be held responsible? Sure, he's annoying, and the very notion of Hahn is a crime against the travelling public, but that doesn't mean that people injured during turbulence are his fault. (On my last flight with FR, I had a chuckle at the CC announcement: "The toilets are located at the rear of the aircraft, and are still free.')