I'm not going to defend Bill (or "Scout's Honor"), but I think everyone needs to go back and read "Moneyball" again, because many of the more simplistic angles of slant in that book have also been proven wanting. Beane's "Moneyball" draft--which was supposed to herald a better way--turned out to be no more effective than other ways of assessing young talent. I don't know how much of the hubris in "Moneyball" is Beane and how much is Lewis (I have always contended more can be laid at the feet of Lewis who, while extremely intelligent has a contrarian streak a mile wide), but all glowing write-ups of unathletic guys who were going to succeed because they recognized the difference between a ball and a strike turned out to be fairly hollow. And if you look at the A's now, they barely resemble the group that Beane assembled in the late-1990s. Of course, Beane's ardent faithful will contend it's all about "market inefficiencies" and not about on-base percentage, but again, for those who contend that, read the book again.
I have nothing against the use of statistics and deep analysis. There are good baseball players and bad baseball players and a lot of guys in-between and they all fall into those categories for a lot of reasons, many of which aren't readily apparent. Solid statistical analysis can often unearth the less-recognizable qualities that define a player's value and that should be respected. But, has nsacpi has pointed out in the Copollella's interviews, scouts still have value, especially in the assessment of ceiling in younger players.