I think the business with the young Tusken is a coming of age ritual to prove his maturity. Boba winning respect from the Tusken leader (and probably eventually the rest of the tribe) reminds me of the 1970 Richard Harris film A Man Called Horse.
https://youtu.be/5H0dKc9QG9E
Yeah, that’s what I figured as well. This would explain why they’re such a small group out in the middle of nowhere with tents instead of huts. Might also explain the darker outfits, though that could just be tribe/clan related.
It’s also possible that the male outfits aren’t necessarily for males only, but rather warrior outfits, hence why one of them in this episode seemed to be female (her costume seemed like a bit of a blend of the classic ANH and AOTC female outfits). She might be the Tusken equivalent of a shield-maiden or something similar.
Either way, I think Favreau has done a great job at expanding what he know about the Tuskens while still keeping other aspects of the universe appropriately abstract and vague.