Feeding the Rat is a much better book than this review suggests. My guess is it likely introduced Paul Pritchard to the term 'deep play'. One of the few 'climbing books' I might recommend to someone not particularly interested in the game.
Horses for courses, but I though the Old Man of Hoy chapter far and away the worst bit of the book.
Obit of Al Alvarez here, seems he's likely to be remembered by quite a few - https://www.theguardian.com/books/2019/sep/23/al-alvarez-obituary