It's really hard to argue with the basic idea. For my blog[1] it'd generally be about 6kB for the html + 1.5kB of CSS that'd be cached for return visitors (typically 15% of pageloads) + Google Analytics almost always from cache.
The "Recent Tweets" part of this site feels somehow at odds with the principles though. It's got nothing to do with the actual page, and has a really bad ratio of markup to content. Those 20 tweets are still 11kB uncompressed! It's also a very heavy visual element.
The goal was not 'minimum size per se' but 'minimum size while retaining all the elements of the old blog'. So yes, the 'recent tweets' (and the older posts) sections are at odds with a total minimalist style. But the whole idea was to not simply strip but to strip while maintaining all the old functionality.
The "Recent Tweets" part of this site feels somehow at odds with the principles though. It's got nothing to do with the actual page, and has a really bad ratio of markup to content. Those 20 tweets are still 11kB uncompressed! It's also a very heavy visual element.
[1] http://www.snellman.net/blog/