He's referring to the two holes on the front of the rangefinder - and commenting on the photographer's seeming problems with focus in the article.

I've shot my Speed handheld in a fast moving situation. I was very surprised at how difficult it was to keep in focus. Too much time shooting with easily focused TV cameras, I guess. But I would think focusing on a politician giving a speech at a lectern would be simple - if one knows how to use a rangefinder. I'm glad to see someone, though, is still using Graflex cameras as they were intended.