fly
Can't speak for a Merpati cockpit, never got invited. But know even a Merpati Check Captain stupid enough to try to get me to do something unsafe or that I wasn't satisfied with would get short shrift.. The complaint and resignation would be offered on landing, no matter what the terms of the contract.. Have spoken up in the past, and it has cost me - but at least I can still sleep well at night.
The advice is the same to those F.O. Trainees who accept the offer, do what you can to improve the reputation of the company you're working for, gain skills to improve your own situation and marketability, and leave if you have to if it means survival. Just sitting around moaning about others didn't get Kingsford-Smith across the Pacific that first time..