[abalone]

That's not really a fair summary. The issue is that less mature language have lots of other issues that come along with the good. Just in this article they noted immature libraries, difficulties with async that kept them from migrating fully off of node.js, and difficulties with error handling. So you have to weigh those in the comparison, not just focus on the one major benefit.

[seangrogg]

They were able to resolve a performance-critical issue that was problematic to a critical part of their application by basically writing a script rather than needing to refactor their code base.

They can benefit further by choosing something more performance-oriented than Node.js, sure. But they weren't having issues with their whole application failing - just a specific piece. When you want to expand your driveway your first thought shouldn't be what materials you want to build your new house in.