Seems CASA are flat out solving problems that don't significantly exist. At least their guaranteed to suceed I suppose.
It's much easier than selecting real issues that take too much effort.
Of the many hundreds of pilots I've come across, I could only think of one or two that have had real issues with drugs or alchohol. In cases like this, all the (very) random testing, promotional pens, and plastic calendars with March missing would not have made a difference. Professional pilots keeping an eye on their collegues welfare does.
Reminds me of Chairman Rudd's "Alco-pops". Gets dragged out every time they need a distraction from a real issue.