While the article mentions at the end the Crystal[1] language. I will say that I found that C# with generics was very approachable, and F# has always been interesting. Wish some of the changes approaching with the acquisition of Xamarin by MS, the openness since ASP.Net MVC, and now .Net Core it's worth looking at again.

I've been in JS/Node land for most of the past 6 years now, and tbh, I've enjoyed it thoroughly, but I wouldn't mind dabbling back in modern C# without some of the "Enterprise" patterns that were way over-used. On the flip side, I still just don't care for Java. Even then, some of the things I might reach for C# to do may be a better opportunity to get into go or rust.

Definitely some interesting opportunities all around.

[1] http://crystal-lang.org/