"Entitlement" really captures the post Rich is responding to. Objections to the existence of Arachne and spec? Who is Chris Zheng to tell people what to spend their time and money on? And he wants Datomic open sourced. Waaah.
It's not a label, it's a description. Based on his post, that Zhang guy believes that people shouldn't have donated to Arachne, for example, because he personally didn't think it was necessary. In other words, his personal opinion should have a special status => entitled.