BA633 Athens to LHR tonight is operated by Finnair. Checking in the agent insisted that Finnair only allows cabin baggage up to 7kg. My bag weighing 10kg is not allowed as cabin luggage, even in Club Europe. As my only bag it contains valuables such as laptop, keys, wallet, a battery charger pack, dress watch, and things I want in the flight such as cables and a book. So now my Club Europe experience involves carrying these items in a plastic bag

The 40 seat prop plane from Milos to Athens with tiny overhead space accepted 12kg bags in the cabin

What the hell is Finnair doing?