What did annoy somewhat is the unneeded sic on p. 200. There is a quote from a letter that James Murry wrote to Dr. William Chester Minor, one of the most significant volunteer contributors to the OED and a man with serious psychological problems which propelled him to murder.
"The supreme position ... is certainly held by Dr. W. C. Minor of Broadmoor, who during the past two years has sine in no less [sic] than 12,000 quots."
Winchester includes the footnote "Even Home nods". The suggestion is that Murry should have used fewer rather than less. Obviously, Winchester didn't check the words in the OED. According to the Merriam Webster Dictionary of English Usage,
"the OED shows that less has been used of countables since the time of King Alfred the Great -- he used it that way in one of his own translations from Latin -- more than a thousand years ago (in about 888). So essentially less has been used of countables in English for just about as long as there has been a written English language."