If by "stagnant" you mean "mature enough that there's little need for constant refreshing of the libraries", then you are right. There's only so much you can do

If by "stagnant" you mean "mature enough that there's little need for constant refreshing of the libraries", then you are right. There's only so much you can do with a web framework, and only so many ways you can go around doing it. There's literally nothing you can do on the newest, flashiest (read: unstable, poorly documented, non-battle-tested) frameworks that you can't do using a combination of Django and Tornado/Twisted in half the LOCs and using mature libraries. The same could be said about Ruby on Rails, or even something like Spring Boot for Java or Spray/Scala. I don't mean to deflate innovation, but innovation for innovation's sake is rarely useful.