There's little to no fluff in that article. ("Long" is not the same thing as "full of fluff".) He's simply analyzing a somewhat complex and very abstract topic -- how to run meetings in general. There are a lot of possible cases and exceptions that can come up in that structure, and he goes into detail about all of them.

Not every topic can be covered adequately in a pithy aphorism that fits into 140 characters or less. Attempting to jam such a complex topic as "running meetings" into a short format just for the sake of being short would not work. There are too many exceptions and contingencies. If they are ignored, the article would not be not a useful guide to "meetings" in general.