Somebody snap his fingers in front of internetauthor's face to see if he is in la la land. Maybe something will spark inside his head. Who knows. Good debate though. We disagree, but it was still worth debating. Shit! I sound like you nerds now! Off to get another box of cornflakes. I saw an ad for it in yesterday's paper.
Well, they say that the more you tell the more you sell. In my opinion, however, the sales letter should be as long as it needs to be. The primary job of the copy is to make the sale. So whatever it takes for that.
What's the old saying? "Copy is like a woman's skirt. It should be short enough to keep your attention, but long enough to cover the essentials." That was before the feminist revolution, of course.