Because the author is interviewed in the Los Angeles Review of Books, and here's a passage from the interview.
the world’s 600 million active chess players.That's as far as I felt I needed to read: if you don't know any better than that, you don't know enough to be worth reading. Simple as that.
The name rang a bell though. Where had I seen that name before?
Ah yes. "It's really good."
It really isn't.
EDIT: There's more.