Well done indeed by BA.
And, Flypastpastfast, if you need a definition of bad behaviour defined to you then you are just the sort of chap who will be be kicked off a flight. Anyone with half an ounce of common sense knows what constitutes acceptable complaint and what is inexcusable loutishness.
There are sadly large numbers of people who seem to lack any grasp of how to behave and this is an excellent first step to teaching them! We live in a yob culture and at last someone is addressing it. I wish BA every success and hope all airlines follow suit.