I don't think the gap between what he originally said and your response was large. I was rather surprised by his "ad hominem" remark, but the rest of his last

I don't think the gap between what he originally said and your response was large. I was rather surprised by his "ad hominem" remark, but the rest of his last blog was pretty much exactly what I would have expected. DPP's a freelance consultant, and I suspect one with no shortage of business. He'd rather stick to projects where the technology he is advocating won't get blamed if the project fails. That's not really surprising.