Trek doesn't like this guy's tone, therefore he "can't" respond?
The guy didn't sound "uncivil" to me, he just sounded frustrated. If what he reported is accurate, the frustration seems totally understandable.
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.
It works really well now, though. :X