Perhaps they referring to the duplication of the site title. And looking at the source code, the title tag is in there twice and each one has the title text in there twice. These are the things that make some people wonder what other little landmines are hidden in a product that misses such simple mistakes.
Edit: nope... probably talking about it being a dupe of this one: https://news.ycombinator.com/item?id=9080069