That is absolute rubbish, muck raking by one or two dead beats in CASA. It was a private flight and the pilot in command in the left seat was a Grade 1 Instructor, very experienced on type. The Director briefly flew the aircraft under supervision as part of a discussion on the suitability of C208 aircraft for inter island and short strip air services in the Torres Strait.
So i had to rattle off to an ATO once that flight training can't be conducted under pvt ops, only aerial work under a flight training AoC. And if you were a pax, (i.e. not cabin crew/crew under training), then dual training also couldn't be undertaken. So basically, he, and the PIC, broke the rules... as is my limited understanding of course...