There's two parts to Atom, Atom itself which is like a better RSS and AtomPub. He's talking about the latter.
From Wikipedia: "The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub or APP) is a simple HTTP-based protocol for creating and updating web resources."
Atom itself is doing fine. Readers have to cater to RSS for historical reasons but for most producers, particularly in non-standard (not "blogging") contexts, it's a waste of time.
From Wikipedia: "The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub or APP) is a simple HTTP-based protocol for creating and updating web resources."
Atom itself is doing fine. Readers have to cater to RSS for historical reasons but for most producers, particularly in non-standard (not "blogging") contexts, it's a waste of time.