Not just that, the author is the Project Editor for WG14.

This doesn’t mean that it’s impossible to make mistakes, but still.

It means he can edit LaTeX. Of course, JeanHeyd is very qualified, but being project editor for an ISO standard does not require this.

I mean, you're closer to the committee than I am, but while that is true in a literal sense, I'd assume that you all would not let someone who knew how to edit LaTeX but not know anything about C hold that position.

Assuming we have some choice. Not many people volunteer their time to this work, which is quite a lot and not much fun. Companies also do not invest a lot of resources into C.