As for the "overwhelming majority" of best shooters and top coaches recommending to focus on the POA, not the sight; and that "..top shooters and coaches teach and shoot that way," I would have to see specific and reliable data to accept that as a fact.
c903,
You can do just that by reading some books on the subject. There will be quotes from many of the predominent target archers as well as sections devoted to the subject. It makes for some interesting reading. Let me know what you find out. Also, I would like to hear from you on my "how many have you killed thread".