We have watched as thread after thread on this site is hijacked by ignorance!
You have NOT read what we have said.
At NO point have we condoned your current airspace model, nor have we condoned the manner in which it was implemented. We have made NO judgment on whether or not Class E airspace is appropriate in the areas in which it has been implemented in Australia.
We HAVE said in this series of posts that Class E airspace, properly applied, is safe. If you can provide facts or evidence that Class E airspace – NOT its application in Australia – but Class E airspace itself – is unsafe, then do so.
We absolutely agree that for the same number of IFR to VFR aircraft conflict pairs, the level of risk decreases significantly as you move through airspace classifications G to A. It is absolutely correct to say that in any given volume the level of risk associated with Class C airspace is less than that associated with Class E.
It is NOT correct to say that there should be a disproportionately lower level of risk in an airspace volume simply because you CAN provide a service – if that were the case, all of your airspace in Australia would be designated as Class A.
The ICAO Airspace Classification System is about ensuring a uniform and cost appropriate risk level across your country, and all countries.