Unfortunately it is fairly obvious that it is Airbus specific.
There are only 2 good trips on the Bus right now, Joburg and Rome, so when every single one of those trips are given to training SO's, regular line Captains are understandably upset.
Especially considering SO's can easily, and more efficiently, be trained on regional and mid-haul sectors, completing their courses in less than half the time and getting checked to line and working for the company, rather than slowly stretching out their training on the only long-haul flights we have, also causing every single non-training Airbus Captain dreaming of suicide rather than having to face another month of Riyahd, Bombay and Jakarta with no respite!
Think of how wonderfully efficient it would be to train the new SO's on the Jakarta night return trips... And Moscow, and India trips. They would all be up, and on the line in no time. And everyone (except the most junior crew in the company perhaps!) would be happy.