I do believe you’re right about the HI birthplace. But, he is still not a NBC because his father was NOT a US citizen. That’s the real razor.....
I’m sympathetic to that argument and personally think that is how things should be. But the legal support for it just isn’t there.
Occam's razor in this case is closer to a Schick twin-blade...the baby-momma could not have conferred NBC due to her age. The bigamist father, BHO1, was not a US citizen, so bingo-bingo, no NBC for Baby-Barry on both counts. BUT, none of us have "standing", so the razor is rusty.