The Mandalorian discussion thread

I know I'm late, but can someone explain the justification these two gave for why these 2 Mandalorians can help them and not the other Mandalorians that were already there? I've watched the episode twice now but I still don't get it. You're in charge, but you have democratically elected laws in place. Okay, got it. Arms aren't allowed into the city, but you let Bo-Katan and Din Djarin into the city. Mandalorians can't come in, but they can? Why? Their explanation just seemed like word soup more than an explanation.
Essentially bc Bo and Din are off the books - I don’t think it was ‘legal’ what they were doing, it was just not very likely to get back to coruscant