Stop picking on Sports Pilots / GA / Rec Pilots as the lowest common denominator - some of them have a hell of a lot more flying experience (including plenty ex-RPT) than someone who would post a sweeping generalisation like that comment.
And leave the format alone - as mentioned above, it is great shorthand. If you are updating your WX in flight and don't have the benefit of ACARS or similar, it is likely you are scribbling it down.
If we did change it in AU it would be another non-ICAO standard to be noted.