He's right though, Elixir and Phoenix are amazing. It promises the productivity of Rails, while being blazingly fast and scalable. You'll never, ever need to re

He's right though, Elixir and Phoenix are amazing. It promises the productivity of Rails, while being blazingly fast and scalable. You'll never, ever need to rewrite your backend, even if you're handling traffic at the scale of Whatsapp. I would be hard-pressed to find a case where you'd want to write your web or mobile backend in anything else. So yeah, I'd claim that it's perfect for every web or mobile backend. Also, no framework is ever going to solve all of your "hard problems", and he didn't claim that at all. It's simply a much better base than Rails.