That's a deliberate misreading of me. I can find concrete fault in what he wrote. To demonstrate the fault would require engaging in a discussion on the merits

That's a deliberate misreading of me. I can find concrete fault in what he wrote. To demonstrate the fault would require engaging in a discussion on the merits of his argument, which I have no interest in doing. (I'm on the mailing list, if I had an interest in doing so, I would have replied there, where it's productive, not here.)