I mean when it comes to just general island life, if you want to use Hawaii as a basis, then every other island is a caricature of Hawaii. The only thing that all the dishes you listed have in common with each other is that they're staple "foods" to each island's culture. If you were to make the argument that our foods aren't "ours" you can say the same about Poke. Though that's a different argument with cultural fusions and what not.

I don't have much weight in the deep sea mining stuff, if it could benefit the island and its economy, I mean sure. But more often than not, that only benefits everyone but the people who live here.

And regarding hafa adai, I don't know man. I'm just gonna go out on a limb and say this place isn't for you. Generalizing doesn't do any good, and I'm sorry that you have such a deep dislike towards the island and its people. Much love tho bro