The JW response would be to cite Acts 4:13.
Now when they beheld the outspokenness of Peter and John, and perceived that they were men unlettered and ordinary, they got to wondering...
Geoffrey was certainly a little snarky toward the lawyer. He's outspoken just like the apostles.
Geoffrey did drop out of school when he was 15. He's unlettered and ordinary just like the apostles.
Smiddy started a thread questioning his qualifications. People are wondering about him just like the apostles.
He IS Christ's brother! HE IS!