In any other world yes!
The problem of course is that if you call in fatigued when you work for a firm that has neither moral compass or legal viewpoints in the entire management team you endanger your career, your livelihood, your future and possibly your liberty.
I fear you do not quite understand how morally reprehensible the chief pilot and his direct report actually are.
They don't care if what you do is morally or legally correct know you just do it or end up on their radar. They simply don't care!
Your choices remain simple do as you are rostered, asked, told or face schoolyard tactics with the ante upped!
I personally voted with my feet. Best career move to date!