Its pretty fucked, I definitely don't think that radically liberatory projects should be put in opposition to autonomy for still-existing tribal organizations though. The legacy of colonialism belongs to the USA state and those who support it, not the people who work against it. The undeniable fact that liberatory politics in the US is conducted mostly by white-folks is more a reflection of the ethnic reorganization the US has gone through since settler-colonization, there should be no conflict between white-radicals and indigenous-radicals.
That having been said mostly-white formations should probably not be creating visions of the future that do not take the self-organization of communities into account, but that's more a critic of being narrow sighted. I like dreaming too