Personal opinion here...
There have been several cases over the last couple of years of pilots being reported for having drunk alcohol before flying - how long before is a matter of debate.
I have no problem personally with the issue being addressed in a radical manner. However, if it is so addressed, I would also like the issue of pilots flying fatigued to be similarly addressed. Most of the evidence points to fatigue being a far more urgent and prevalent problem than alcohol. Furthermore, as has been pointed out in another thread, there is a significant number of pilots who resort to alcohol in a slightly misguided attempt to combat fatigue and lack of adequate rest.