I can't believe I'm about to say this, but I can understand what Leadsled is saying.... and, in theoretical and statistical terms, I believe he is correct in what he is saying.
HOWEVER, and it's a big however, a lot us see the product of those methods as rubbish.
So, not only do your methods need to be "by the book" ... they have to provide a "reasonable" outcome.
If we see the fruits of your loins producing a product that says it's more appropriate ( forget about more safer) to "pretend" that VFRs don't exist ...then you have to understand that we are going to question your methodology.
Do we have a realistic chance of changing ICAO Methodologies? ... not in the short term! So, our only avenue in getting what we believe is "appropriate" is to scare public servants with ... dare I say it ... a common sense approach.
Hopefully, that will trump your statistics.