I wouldn't call it a birther fight. Logically, it's possible Obama could have been born in the US, and to have presented a fraudulent certificate. Arapaio proved it was fraudulent only. Did not prove where, or where not he was born. Because it is fraudulent, it increases the probability he was born offshore in a way that made him inelligible. But there are ways to be born offshore and still be eligible, as in the case of McStain.
Trump never said the certificate was not a fraud. He merely stated something he probably can't know (where Obama was born) just before an election.
What's at stake, in 2018, is your own credibility, based on how you are framing Arapio's (Joes) work, his reputation, his status, and every other element related, such as Hawwaii''s complicity in a coverup. Hawaii never had a credible come back to Joes work, contrary to your statement.
This is about you now.