You mean the Althing right? Just for people who might not know what Willem is referring to: https://en.wikipedia.org/wiki/Althing
What I think the Wolves of Vinland, and other Viking LARPers, seem to emphasize is Honor, Heroism, Masculinity/Gender norms, Tradition, Violence, Lineage, and anti-Egalitarianism/Vertical power. See the chapter "Honor and Degradation" in the book Debt: the first 5,000 years by David Graeber to see this horrible violent game illustrated. https://libcom.org/files/__Debt__The_First_5_000_Years.pdf
What's interesting to me is the hunter-gatherers I most admire are people like the Hazda or the !Kung don't give much of shit about that stuff. And, from what I read, in fact enforce egalitarianism as a first priority with "reverse hierarchical dominance" and sharing without expectation of return. No debt, no property, no lineage based ownership, no slavery/debt peonage, no exalting of people over others (See Egalitarian Societies by James Woodburn https://libcom.org/files/EGALITARIAN%20SOCIETIES%20-%20James%20Woodburn.pdf).
I think to separate the heart of rewilding from being mistaken for this racialist, tradition, hierarchical, debt relations nonsense people need to emphasize the so called egalitarian/reverse hierarchical dominance values and actively advocate for them--beyond just the allyship and decolonization.
Even many Coast Salish/"Cascadian" tribes traditionally fall into the Honor, Heroism, Slavery, Lineage ownership (e.g. hunting/fishing areas were owned by certain lineage based clans), Debt game, for example. I'm willing to fight against their oppression and extinction as a people, but I have other values that are different from their traditional cultures, period, and will also fight against debt and hierarchical relations regardless of the culture.
To me, if egalitarianism and non-debt relations don't become prominent soon, I plan on distancing myself from the culture of "rewilding". This especially true if it gets associated with either the commercial paleo/primitive skills crowd (that's another thread in itself), or the racialist tradition/race war crowd. And I imagine I won't be alone.
(See also the movie "Hazda: Last of the First". Here's a trailer: https://www.youtube.com/watch?v=xVwxjqVH3rI)