I think you are proving dang's point. Instead of challenging assumptions and conclusions, all you've done is call the post "peurile", "irrational", etc.

I didn't particularly like the use of "anti-immigration people," but there is certainly a way to charitably interpret it. You would interpret it as just so - a phrase he's using to refer to people opposing loosened immigration policies, which unintentionally is a poor choice of words. Rather than uncharitably interpreting it as an an intentional attempt at putting down these people.