Blame whom/what ever we like, but at the end of the day the Captain (and F/O) are the ones who bear the full responsibility for the safety of their passengers, the aircraft, and whatever else the aircraft might come into conflict with.
O'Leary's aggressive style of management is possibly affecting many of the crew who work for him.
How to stop it?
Have the civil aviation checkies start making their presence more obvious on the flight decks, and at airports.