Um, that is readability. Everyone goes through it. Basically, "Do you know the Google style guide, and can you be trusted to know when code does or does not follow it?"

In a large code base it is important to have a consistent style. There are a million reasonable style choices. And knowing a tremendous amount about the C programming language tells us squat about whether you know what style choices Google has settled on.

I don't think Google's policy on this is unreasonable. (Disclaimer. I work at Google.)