The article was in response to many users baffled by the fact that the camera was showing a given aperture and the speedlight was showing another while using some macro lenses.
So there is the detailed explanation of the how and why: a macro lens changes its actual focal length as it focuses at very close range distances and therefore its effective aperture also changes.
Don't get depressed, I'm with you.
Now, that Szen's IQ is above average levels is not up to discussion as you suggest. I am convinced he is a mutant , like most in The Team. (I said "most" because I am part of the team and not a mutant... not in that wonderful gifted sense anyway).