In my opinion, a NVFR rating should not exist.
Like everything aviation, history is usually the motivation for sensible regulation. Statements as above do little to enhance the good this rating allows VFR pilots.
I say this without prejudicing my opinion that many regulations are made to suit an eleventh hour protocol to save CASA's arse.
The NVFR is not such a case.
Things could have changed since I last flew at night, but the forcast was the deciding factor on whether a NVFR flight could be legally undertaken.
If this was taken in hand when preparing any NVFR flight, in near end of daylight, (not necessarily this one), the flight should be considered to be able to progress with safety.