D lang

So there's this D language that was recently used to make AAA game "Quantum Break" and here's a talk about that: http://dconf.org/2016/talks/watson.pptx

But, having said all that, I’m a convert. D’s compile time features are not only far superior to what C++ offers, but when compared to contemporary emerging languages like Rust, Swift, and Go, there’s no competition. I have no real desire to use those languages purely down to the lack of compile time code functionality in comparison to D.

Why aren't you using this awesome language when it's so much better than Sepples or the meme languages?