Ask HN: Why RSS resurgence instead of Atom?

I've seen several posts here and elsewhere touting RSS support or advocating a resurgence of RSS.

In my experience Atom, and the Atom Publishing Protocol, are much superior technically to RSS. There's a JSON version, richer vocabulary, more specific about the content being transmitted, Atom is an IETF standard, namespaces support, and full internationalization.

However, RSS seems to be the one in resurgence. I'm looking for people thoughts on why. I'd also love thoughts on how Atom could have its own resurgence.

Some of the differences are also discussed in more detail here: http://www.differencebetween.net/technology/difference-between-rss-and-atom/