I think you misunderstand. I'm not against animations. The minimize animation in today's operating system is a perfect example of how animation can simplify the user experience (although I do think the OSX shrinking animation is a tad dramatic). But keep in mind, those animations are still short compared to the examples here. Whats more, the linked example uses the fly in animations for interactions without major context changes. Switching from pages in a document is hardly the same as switching applications.