Ember does a ton of magic under the hood that when something goes wrong it's the hardest thing to debug. Ember is also strongly opinionated which some people like I guess. Ever since I've switched to React + Redux I've never looked back.
A big part of Octane is reducing the amount of "magic" under the hood for a lot of features. For instance, autotracking and tracked properties now allow you to use plain JS for most computed values, which means that every stack trace that you have while debugging a getter will be a standard stack trace, without confusing computed property code in between!
I definitely encourage you to check it out sometime, a lot has changed!
