But my main objection is that it will not teach anybody anything about good photography, although that seems to be its primary goal
I disagree also with important parts of the terminology used in that Wikipedia article.
The Keeper of the Garden
2

No, it was never meant to be a teacher of photography, neither have I claimed it ( in-fact I will argue vigorously against for such a scheme). Not sure what made you deduce this.

From the original article “Of course, technology can never replace your personal taste and judgments. But we sincerely believe that we are entering a fascinating stage in which technology can power curation, enabling human stories to be discovered within the firehose of photographic data — starting with your very own camera roll.” The technology is meant to be an enabler for human creativities, by making search and discovery of photographic content easier.