I'm not a fan of Ember, but it's focus on tooling, developer experience, and sticking to it's core principles in the name of consistency is something to be admired. It's not as shiny as Cycle or React, but if you started working with Ember years ago, you've had reasonably robust tooling all along (as opposed to the bleeding edge constantly breaking crap of the other frameworks), and have been able to reuse your knowledge for years, so you're potentially quite productive.

At least it's the impression I get.