He was sarcastic but that's hardly being uncivil. Thing is, his complaint is probably very representative of many beginners so giving the impression that you're ignoring it can have a very negative impact on a project like Ember.js.
I spent about two weeks forcing my way to a functional Ember application, because the framework seemed to have promise.
In the process I needed to bother the developers on IRC, read a nontrivial fraction of the Ember JS code, and implement missing Ember functionality from scratch (KVO-compliant dictionaries).
Ember doesn't work unless you get everything right, and doesn't provide much in the way of diagnostics, so it was one of the harshest learning curves I've ever run into. They really need to work on their tutorials.
