I'd agree that the initial approach of Rails is becoming dated but Rails is quickly moving away from this. Consider Rails 5. Native web sockets and an API mode

I'd agree that the initial approach of Rails is becoming dated but Rails is quickly moving away from this. Consider Rails 5. Native web sockets and an API mode make Rails an excellent backend for JS apps. You fail to recognize the evolution of the framework and where it continues to fit in today. If you're done with Rails it's probably because you failed to evolve with the framework.