Which one, whether GUIs were shiny and new in the 1980s, or whether Bill internalized the lessons that made the GUIs work?
The former assertion is certainly true (I was there!), the latter is arguable, but even as an ardent Linux user, I'd have to say yes -- at least the engineering aspects (the more touchy-feely aspects, perhaps not... as discussed by the blog post).
Out of curiosity, is this factually correct?