Honestly, there are enough problems with the article to warrant a critique. However, someone may not want to take the time to outline every single one. It's incredibly confusing to the reader that the article states Netflix relies on frameworks for one language, and then states that all of their code is written in another language.

Hey, we got this fixed up on the original post- waiting for Todd to fix the repost on HighScalability shortly. If there are some more problems let us know. We want it to be accurate. http://www.scalescale.com/the-stack-behind-netflix-scaling/

Among the things I had knowledge of, a lot seemed incorrect, so I wasn't quite sure how to take the things I didn't have knowledge of.