There are no provisions in Hawaiian law that allow someone to get a birth certificate saying they were born in Honolulu when they weren’t.
Yes, there are. Or at least were.
True, perhaps, but the provisions of Hawaiian law are such that it is, or was in '61, ridiculously easy to get a Hawaiian BC saying you were born in Hawaii, when you weren't. And there would be enough motivation to do so, if not by Stanley Ann, by Grandma and Grandpa Dunham, but perhaps by SA as well.