Absolutely, on the Mark.
Isn’t there enough to do out there, without fretting to death the syndication format? Geeking out of control.
The size thing is number 1.
What’s the big deal about publishing in two formats? Or more. Isn’t there a need for mobile phone, pda, etc formats.
RSS has momentum, beyond the ubergeekdom, and even beyond Dave Winer. Switching formats leaves behind all the people and groups who have just started to get it.