Jack ranga
You are right there about failings in the system, BOM!
Many years ago I did a missed approach at the minima in a central Queensland airport, the forecast was cavok! Landed with something less than fixed after doing a home made approach, and shorty after landing a lightening strike occurred off the end of the strip ....CAVOK!
The reply to my incident report from BOM several months later was full of public service speak as to why they had done nothing wrong! The was a paid met observer that did an observation 40 minutes before my arrival, and forecast was not amended.