Yes, he is first generation off of the island and is native Hawai'ian. He is of the royal blood line, but probably would never have seen the throne (too far down the line) and Hawai'i isn't a monarchy anymore.
Usually with these movies it is the stereotypes that bother them. Lilo and Stitch wasn't as bad as other films. My husband hates the voodoo reference that Lilo makes as he hasn't understood that as part of his culture. How the lifeguard looks sexualized like a Baywatch babe. Nani's use of belly button shirts and a bikini as that is western/tourist influence and the bikini isn't smart swim wear - more likely to get cuts from rocks and coral reefs or get sunburned. The Elvis fandom. Although, he liked that they used some pidgin, the song Aloha Oe (Farewell to Thee)” by Queen Lili'uokalani was added, and that in Lilo's pictures the idea of obese is beautiful was incorporated, and the fact that Lilo wrote "Kapu" (forbidden) on her door.
Moana he didn't like as it was a bit confusing with the lore adding Hawai'ian, Tahitian, and others mixed together. I agree on this point as it felt muddled. Maui was not some big Samoan looking dude, but in lore was a thinner, younger man. The fact a woman tribal leader was not traditional to the culture. The little boy's disrespect to hula by adding in his own moves. He thought the shark god jokes were great and the fact that everyone wanted to eat Hei hei, he said that was "So Hawai'ian" lol. He has an interesting story of a family gathering in Hawai'i where they ate one of the animals the family had...I think it was a goose or something that one of the kids adored for dinner. He thought the reincarnation lore added was interesting. Although, not accurate or Christian, some Hawai'ian's believed you needed to tattoo on your body your reincarnation animal so that you can come back as that animal. If it wasn't tattooed, you wouldn't come back. Explains grandma in Moana.
Hula is good in general, but it became sexualized. It was originally a story to tell about the islands and their gods not to dress down and shake their hips for sexual attention, so as long as it is represented correctly, he doesn't mind.
This isn't Disney's first round of cultural insensitivity, though. I mean, the story of Pocahontas was all wrong.