Hmmmm - I think back to when I was taught the FRTO and since dual flying has largely ended I find my (possibly at times) improper RTFO has actually come from listening out to every one else on the Control/Info freq. It would appear that it is everyones fault that everyone else is doing it 'not quite right'.
The one RTFO thing that does nagg me is when making intial contact with.... 'ABC is Avalon
this time 2500ft' - Where were you last time?? - Its your intial contact.
Personally I dont think the RTFO in NZ is too much to worry about in the big sceme of things. - ATC understand the a/c and the a/c can understand each other - If it was a problem im sure the matter would have been addressed such as overdue SARwatches.