Native Hawaiians only make up 6% of the states population.
I don't see this going anywhere, the Feds wouldn't allow them to secede anyway.
It'll end up like Puerto Ricos petition to join the union. It's shady as fuck, full of controversy, and congress won't want to touch it with a 50 foot pole.
Doing a quick search shows that only backwater libertarian and right wing sites are talking about this so I'd take this article with a grain of salt.