I'm really pretty anti-node, but this article isn't very good. The concerns here are mixed up and not very thorough. All these points need graphs, charts, something solid to anchor them to. This is the sort of article that polarizes, but doesn't add to the discussion. It starts off strong talking about a high bug count, but never gets into specifics there. As far as scaling across cores goes, it's disingenuous to sug…
Unfortunately, this way of stating unqualified arguments as basis for reasoning is quite prevalent on the Internet. Keeping it to node.js bashing, this guy takes the discussion to a slightly lower level: http://youtube.com/watch?v=1e1zzna-dNw
He tries to discredit node by taking apart the copy on the front page of nodejs.org.
It's all conjecture and ad hominem.