I don't think Dave could bring himself to enjoy anything that prominently features Atom, PubSubHubbub and OAuth. Dave didn't invent these things and as such Dave's personal development stack doesn't support these things.
Winer and the majority (all?) of those commenting act as if Gmail has been this walled-off pristine email client. WRONG. There is chat, RSS feeds, SMS, Calendar, Docs, Location and iGoogle gadgets, etc all bundled up in Gmail if you want them. It has never been just about email and might as well absorb status updates and Wave-isms. These people sound just like users complaining about every little change with Facebook.
I'm not bored with buzz after a few minutes. Looks like someone is trying to capitalize on the hype of buzz (to catch the buzz so to speak) for their own blog by saying it sucks.
Seems to me that Dave Winer is always down on something. If its not Buzz its twitter or PubSubHubbub its something else. I don't know Mr. Winer, so I try not to judge, but to me he just seems to be negative guy.
I might be mistaken, but didn't they say in the Q&A portion of the announcement that today's API release is only the beginning and we should expect a more featured API by Google I/O?