It should be kept in mind I am not an expert in this field I just have a deep love of research, if anything I present in this post turns out to be wrong I will gladly fix or remove the content or correct it depending on the circumstances, the goal is for true and well informed not to be working off a lie. That said given how broad a system it is a lot of the research isn't going to be blatantly spelt out except in one section of all of this. However, definition of tribe however should be considered as has its own point of how this is looked at given how blanketed the word is. For the point of the claim given with how things are presented we are going to follow that a tribe is a social division in a traditional society consisting of families or communities linked by social, economic, religious, and blood ties, with a common culture and dialect, typically having a recognized leader. More than just the definition its important to remember tribes are very proud of their culture in a lot of cases and like to have it on display in their lives and share it with other as long as those it is shared with are respectful, however this does not speak for all so bare with me here.
So how does this pertain to anything Vidia is doing to even come up? Quite honestly it gets back into the species setup as does a lot people started to focus on to judge actions although by definition I wouldn't call what she does with them as tribes specifically but more groups at the end of the day. The setup divides the species into six different groups however they are not different in cultures, in fact they hardly have culture of their own the main focus being to provide tasks of their job trained into to spend their lives in from what we can gather not anything uniquely developed to them, nor is their an advantage taken in art or fashion particularly in the setup he that the hair or things work with the only exception being the sea ones added later on will wear flowers in the hair simply because they are pretty where the other tribes won't even do that much. Spirituality isn't even a thing followed at the end of the day and they are limited to very crude early versions of those things if able to be made at all. There's even to the point these creatures do not store their food last I was aware but hunt and gather on the daily not yet figuring out growing things at home or raising them to make the job easier nor do most have access to fire although the savannah group has most recently discovered it in events. What she has even built doesn't read like a tribe at all at the end of the day or to established instead reading more like the beginning of a culture or civilization trying to start it's first steps at the end of the day, which can actually be really cool and fun but not what is presented.
The strongest argument to a tribal thing at the moment however can become a lot more delicate. Another major difference with the sea group that makes them more advance is the others is not just the fact they have a vague start to fashion forming for them but also they are our first example of them starting to gain access to art since they are the only group to host markings on their bodies that are known to be on the children as well that resembles tattoos.
Typically in a tribal setting tattoos are a rite of passage of their own and represent different things based upon achievements in their lives and have their own spiritual. Ignoring the fact that most go more to woman especially on the chest we immediately go into the fact they lack spiritual focuses and most don't seem they could tie to a specific role as Vidia didn't want to do more than the pallets for the characters. This instantly throws them into the just pretty designs camp and the fact done on children pretty early on does mean nothing special to getting through with things not the tales of who they are and lineage often linked to the actions and roles. It likely doesn't help some people looking at them on the argument of disrespect however as some do align to close to Inuit designs more simplified on the chest which are meant for specifically women to represent motherhood and should be accompanied by ones down on the thigh that are meant to help prepare for the child as well as a safe delivery which would instantly put others off on top of the facts they are put directly on characters with a more tropical ocean than the things you find in the Artic regions that would be from if truly the case. It is entirely possible these are just random designs done on Vidia end however and this should be kept in mind despite things at the end of the day. - ⚜️