There are 74 scenarios; they can't all be winners. Besides, he's already given one 4/5 rating to
one, and a 3/3 to
another (which, for a free adventure, I happen to think is a passable score), so it's not like there aren't a few gems in the rough.
As for your question: I at least find it useful. It gives me an idea of what scenarios are worth taking a glance at, and what ones aren't, for when I suddenly find that I need something on short notice.