We all have our pet peeves, and this is one of mine, too. But it's surely orthogonal to issues of code reliability—someone can definitely write flawless English but terrible code, and it's definitely believable that the reverse could happen—so it's not clear what's the relevance here.
Honestly, the biggest thing it tells me is that this is likely a one person project… there was clearly no one proof reading or reviewing this text. I am always a bit suspect of relying on single person projects.
