Why?

Once again: this approach means zero dependencies. And in a way, you answered it yourself:

Might not be fine for real time systems or games

And there are more examples where it might not be fine, here's a major one: building a C++ library. It's true, this article is not about real time systems (I do apologize for diverging...), but this language could be one solution to problems approached in this article (it would replace the C++ example).

I am interested in projects like shedskin or pypy, but they have dependencies. The bottom line to me is: a higher level language that compiles to C++ code with zero dependencies. Think about it: this language could be used for any application, deployed in virtually any codebase and any system.