They overthought the whole thing. It's the usual design by committee mess you get when you take something that is undeniably simple (like a blog) and you elevate it to something that is not.

First of all, it looks like something straight out of the 90s that didn't age well. Secondly the choice of a sans-serif font for a text is questionable and the choice of Open Sans in particular is inexcusable.

The other day I was reading an article on my Nexus 5 and I couldn't help but notice that the text is just too small/thin and the whole thing is just spaced wrong.

If you ask me it' s a 4 out of 10 design wise.