You are really overestimating the substance of the native Hawaiian independence movement. The vast vast majority of people living in Hawaii are not even native Hawaiian to begin with. And even most local Hawaiians don't want independence from the United States. It is really a tiny minority offshoot with some specific political grievances. Independence isn't even seriously floated by the majority of these independence folks. The whole idea is just a political and marketing tool except to a very small group of people.