If the CASA Part 61 MOS syllabus of training was correct for the current industry demands, the additional training wouldn’t be required.
Unless the trainee pilots have been trained by competent instructors with industry experience in legacy/vintage aeroplanes, the green horn freshly minted CPL holders will have absolutely no idea how to handle a full load of passengers and a Cessna 207 on a 35 degree afternoon out of Kununurra, or the Rock doing a scenic, let alone dealing with a bunch of drunks trying to smuggle grog to Port Keats hidden in baby diapers 🤣