The funny thing to me is that he doesn't know that "desktop in a browser" functionality is not an incredibly complex thing for web apps anymore. It's a matter of having good enough client side development skills to implement it. Also, with UI frameworks like Flex, YUI-EXT, and Apache XAP abstracting all of the hard stuff away...you don't even have to be an expert.

This guy doesn't even fully understand the topic that he is ranting about.