They said something like "He's not a Mandolorian; he's a common bounty hunter." I took that to mean they were looking down their noses at him as a poor example of their race. As if the comment meant "he's not a REAL Mandolorian because he doesn't reflect Mando values." Not "he's literally not one of us." Or did I miss something?
Wasn't Jango sort of adopted into the Mandalorian culture?