It’s fine if you don’t want ethics to be part of your gaming experience
...
to roleplay characters that didn’t question the moral landscape of the world they inhabit
Back in the day, we referred to that sort of implication as a "false dichotomy". A campaign where the player characters try to steer away the bandits - in this instance, soldiers without a kingdom who have resorted to robbery as a means of survival - from their activities (as opposed to slaughtering them wholesale)
and kill orcs/hobgoblins/goblins/bugbears/et cetera by the score without a second thought is entirely possible.
Okay, fair enough. It’s fine if you don’t want *that particular kind of ethical question* to be part of your gaming, but I prefer both to interrogate the assumption that there are some kinds of creature (let alone sentient creature) it is straightforwardly okay to kill, and/or to ask when it’s okay to kill them, and to be able to roleplay characters who also question that.
I’m slightly puzzled why you’re okay with some kinds of ethical complexity in the game but see introducing others as corruption by real-world politics, but we all have the right within the game world to decide what we do and don’t care to question.