People aren't homogenous, I have no problem with the idea of a pacifist Mando but her ideals are too poorly defined. It'd have been better if they had decided to have her an absolute not-even-in-self-defense kind of pacifist I think. I'm also not entirely sure Star Wars is the right franchise to have a war/peace debate, because
A) It thrives on black-and-white morality with a side full of bad guys and a side full of good guys who fight for ill-defined reasons and
B) It's an action franchise, it needs its heroes to fight people so its decked is stacked against the pacifists from the word go.