My understanding of that tweet would be that he is echoing the general sentiment that many technologists share that the web has made people excited about techno

My understanding of that tweet would be that he is echoing the general sentiment that many technologists share that the web has made people excited about technologies that were better written half a decade ago. For example, all the hullabaloo about creating basic sprite-based games or simple WebGL models. Such stuff has been possible on the desktop for many years, but suddenly because it's in a browser everyone seems to lose their mind over the technical amazement of such developments. To relate this back to the tweet, I believe Bret was saying that Apple is touting iWork for iCloud as a revolutionary product, when in fact it is a pared-down and buggier version of software which has existed on our desktops for years. It's sort of like breaking the wheel to reinvent it.