None of that should have interfered with them working out the logic of how the covert works.To be fair, they pretty much did that in the first two seasons, showing that other Mandalorians don't adhere to this custom and having Din compromise it for the sake of his ward, while also having his faction be decimated down to a handful of members.
Maybe I'm wrong, but I always thought the appeal of the Mandalorians, as far back as when kids had to save up proofs of purchase to get their Boba Fett action figure by mail (with the non-firing rocket pack, alas!), was that they were stone cold killers.
But the Disney+ series seem weirdly determined to undercut that. It's one thing to show Djin not being infallible -- the series would get pretty boring if he was a perfect warrior 24/7 -- but between Boba Fett wanting to walk around without his helmet on and get jumped by every petty thug on Tattooine and the Mandalorian covert acting like a bunch of raw recruits who seem to be flummoxed by everything other than Mean Girling Djin, it seems like the folks in charge of Star Wars think their main appeal is their helmets.
Heck, if I were in charge of Star Wars, I'd probably have a summit where we sat down and did the one thing I think JJ did undeniably right before TFA and write down all the stuff that makes Star Wars awesome, which he used to remix all the contents for that movie. But I'd drill down and talk about what the essential fun elements are for everything -- What makes a wookiee cool? What's awesome about hyperspace? What is the appeal of Stormtroopers? -- and put fences up around those, so we don't end up with how the broader Mandalorian community has been portrayed in this season and in Boba Fett. (For crying out loud, how is that we've never seen Boba Fett disintegrate anyone, when Darth Vader of all people had to say "bro, take it easy with all the disintegrations" in TESB?)