It's a different form of rationality, one that is self-referential. They understand the Internet as a medium for discourse, where the audience is extremely large but the number of other memes competing for attention is also very large. They also understand that the more outrageous and anger-provoking a statement is, the more likely it is to go viral. Therefore, the way to ensure that your statements actually have an impact is to hype them up to the most provocative, outrageous form that you can, see who bites, piss people off, and get them talking.
We're discussing this article, after all, right? We know who Balaji is. While look at how many very rational "Show HN" posts here fail to get traction or reach the front page.
Oftentimes, there's a kernel of a true idea behind the hype, but it's been taken to the most extreme form possible simply because the most extreme form is the only one that goes viral.