To ensure the safety of the aircraft, passengers and crew this situation has become more of a concern for all who fly. Unfortunately it is a minority of people who are consuming too much alcohol, which then effects their behaviour and attitude making the flight uncomfortable for the majority of the passengers and crew. Having experienced this situation on two flights, I do agree with the proposed policy to limit the amount of alcohol consumed by passengers prior to a flight. How this will be monitored and enforced is a good question.
For all who wish to comment negatively to this post, do realise that I enjoy a drink myself.