Is it really that uncharitable? Yes, it's slightly hyperbolic, but I argue only slightly. Whether intended or not, the tone of the article is patronizing. Here are some examples.

> The programmers who live in Flatland

> Likewise, you cannot comprehend a new programming dimension because you don’t know how to think in that dimension

> the sphere is unable to get the square to comprehend what “up” and “down” mean.

All of this is patronizing. It implies that I am incapable of understanding the benefits of Lisp. If only I were able to lift myself out of the dull swamp I find myself in! But I am capable, and I do understand them, and I still don't like it! And I think most Lisp detractors do as well! I would argue that it is the Lisp proponents that live in Flatland - they need to understand that there's another dimension to criticisms of Lisp that aren't just "I don't like parentheses" and that there is substantive feedback to be gleaned.