In second season of The Mandalorian, Bo-Katan and her companions immediately remove their helmets after helping the titular Mandalorian fight off some people trying to kill him. Why do they do this? I understand these Mandalorians, who were born on Mandalore, don't have a strict tradition to keep their helmets on unlike the zealots of the Watch. But why do they remove their helmets here? Is it because they're uncomfortable? Do they have a different tradition that the helmet should be removed when greeting someone? Are they trying to confirm whether he's a member of the Watch, and thus deliberately provoking him? It's a bit odd that they continue removing their helmets throughout the episode too, since it irritated the Mandalorian so much the first time.
I'm most interested in in-universe answers.