I really don't see what is arrogant about wanting to connect with indigenous or tribal peoples. Whether or not any certain social group allows an outsider to interact with the members of that social group is up to them, according to their rules, customs and so on. If a person is respectful of those rules, customs and so on, I see no problem with it, maybe others do but that is their opinion, and since it's an outsider's opinion, it tends not to reflect the wishes or opinion of the social group in question.
I don't think people should expect to be welcomed into every indigenous group, part of the way most modern tribal people preserve what independence they have is by excluding outsiders, yet they also adopt outsiders into their tribe in certain cases, depending on the group and the circumstances. You can't say that this one does and that one doesn't , because it's up to those people to decide for themselves who they will accept and how they will conduct their relations.
Yet, what is wrong with talking to and learning from and spending time with those who are willing to share what they know, their life and so on?
In fact, how are people supposed to form tribes and "re-wild" without interacting with any sort of indigenous peoples? No offense, but I don't think that many people in the re-wilding community (myself included) have enough experience and social skills to connect to each other in the manner of extended family relations. We certainly can't learn that much from books regarding on how to live as extended family members, we have to see it being done here and now.