In addition to creating beskar armor and working on weaponry, the Armorer is the moral authority for the covert she runs. As we know, Mandalore was destroyed, and the people were scattered around the galaxy. We even got a touching scene where Mando teaches Grogu that, to be a Mandalorian, you must know navigation, so you’re never alone. With their people spread out and away from their homeworlds, having someone who can keep the tradition alive becomes even more important. Swallow said:
“I’d like to think she is somebody who upholds what is sacred and what is true. She’s the one who’s sort of been the heart and the soul of the Mandalorian people and reminding them what has held them together. The creed is something that many of them have felt not worth holding to, but through everything that’s happened, it is the thing that has held most of them together, and it is the thing that has seemed most true to them.”
This doesn’t make her dogmatic, though. She’s still open to hearing and learning, as she’s shown several times. She accepts Grogu into Din’s clan of two and assigns him to be Grogu’s father when she learns of his feelings and his quest. She doesn’t believe that Mandalore is accessible, so she tells Din that he cannot relieve his apostatic state but is willing to listen when he tells her about the traveler who reached the surface. When he returns, she shows no issue or resentment about being proved wrong. Not only that, but despite the things she’d said about Bo-Katan’s beliefs and how they conflict with hers, she offers redemption to her without hesitation or even a request for it.