I’ve read the article yesterday (fully), and I didn’t get the impression that the author thinks that “other browsers are stupid”. (And I’m a loyal Firefox user, so I think I would have noticed.)
From what I’ve understood, the thesis is about the issue of browser inconsistencies, and how it sometimes may be sensible to resort to user agent detection and hacks.
From what I’ve understood, the thesis is about the issue of browser inconsistencies, and how it sometimes may be sensible to resort to user agent detection and hacks.