Was Moyse one of the greatest flutists of all time? I don't think so. Although an inspiring and brilliant pedagogue, an essential author of dozens of great studies, comparing his playing to Gaubert or Hennebains is depressing. He just wasn't that great. It's a similar situation with the illustrious William Kincaid, who I feel was overshadowed by his pupils, especially Baker and Mariano.
Anyway, McKutcheon does a beautiful job with this biography. It is engrossing and marvelously written. It's up there with Nancy Toff's bio of Barrere. A must read for serious flutists, even if you are as sacrilegious as I am!