Its a dupe in that discussion about yarn has already been established and is taking place on another thread.

There's no point in fragmenting the discussion of yarn.

I would've expected the discussion here to focus on npm, their reaction to competitors, and the main content of this article: client-registry cross-compatibility.

Why not add this (npm's response) to the discussion on the other thread?

Edit: which I just did.

Depending on how the discussion grows such additional information could be buried amongst other conversation, and it might be important enough to be highlighted (by having its own thread here?).