I once, at Thomas Cook check in Gatwick, had to remove items from my cabin bag and repack in my suitcase in order to ‘comply’ with 7 kgs weight restriction.
It didn’t seem to occur to check in agent that I still had exactly the same total weight but the bag TC’s staff had to handle was now heavier and the bag I had to carry and lift was lighter!
Recently flew Emirates who,have 7kgs hand baggage limit which seems to be routinely ignored.