Totally agree. The OP posted at 4:05 a.m., when I was very much asleep. I've been a little bit less responsive this week in general as I've been participating in TAG[1] this week. I'm very sorry that our project came across as uncaring.
Should anyone doubt it, wycats & the ember team certainly do care a great deal about their users. The Ember team and Backbone team have differing philosophies about client side development, but wycats, tomdale and the rest of the crew are smart guys trying to do the right thing.
[1] http://www.w3.org/2001/tag/