That hasn't been my experience with ember in the past 1.5 years. Granted when I was first introduced to it about 3 years ago, there were many issues and I wasn't keen on using it but since then things have improved a bunch.
Nice to hear, I haven't used Ember for about 2 years now. When they started putting more effort in their CLI, this was the signal for me to jump ship and go for something more light weight.