Bloggs, the majority of the major airlines that would be affected by the diversions have RNP AR. I'm sure Virgin are not too far off getting them, don't know about Tiger, they can't even do managed NPA's.
When the majors miss out, that makes the headlines. A couple of turboprops or GA type aircraft don't.
Once RNP AR is supported by industry there will be lots of these style approaches and the industry will be far safer as a result.