We all understand the difference between "texual" and "manipulating colored boxes, drawing arrows and generally using a non-textual interface". I'd rather we addressed this rather than the accuracy of the author's wording...

I partially agree with the author in that programming is inherently complex, and that "visual" UIs are inadequate once the program reaches a sufficient complexity level. Also, textual manipulation tools tend to be ubiquitous and more importantly, non-propietary; I'm naturally wary of other tools.

I disagree with the author in that I think there's still room for exploring graphical UIs.