Programming languages are getting better and better. The standard of adoption is so high that, without major corporate backing (like Kotlin), it takes that long to get the language good enough & "big" enough (in terms of network effects) that people can start to seriously consider using it at work.
Also I think there is somewhat of a pendulum swing occurring in programming languages in general. People seem to be taking an interest in learning more and weirder programming languages, and taking interesting ideas and design patterns from those languages. And a lot of lessons learned from the "Age of Dynamically-Typed Scripting Languages in Production", too.
But it doesn't run on OSX 10.12.x which is the last OSX version I'll be using for some time.
Nim, on the other hand does. It also does microcontrollers and browsers. Couldn't ask for more.