At the risk of sucking the fun out of a pretty funny joke, I think the underlying subtext is that established projects are failing to "grow up" -- i.e., that established, depended-on projects are hiding under the shield shield of a youthful 0.x version, when really, given how popular, old, and depended-on they are, they should embrace that responsibility and grow into 1.something.
(Though, on the other hand, maybe it's more just honest signaling of expectations. "We are a 0.x project, we value developer speed and a clean code-base more than backcompat or stability for users. We will NEVER grow up!" We could call it Peter Pan versioning.)
(Though, on the other hand, maybe it's more just honest signaling of expectations. "We are a 0.x project, we value developer speed and a clean code-base more than backcompat or stability for users. We will NEVER grow up!" We could call it Peter Pan versioning.)