That's the point. I don't actually think he's a great developer of talent. I think he's a very, very good coach, who knows how to make a group of kids play well together, be team first, and play exceedingly hard (and hug). That's his skill set. But making better basketball players? He's closer to average in that department imo.
Is he as great a developer of talent as Calhoun? No, but Calhoun is one of the best developers of talent ever, at any level. K is still, if not elite, pretty close to it in that department, imo. The facts are, Duke currently has the most kids in the NBA - this is not because K is head and shoulders above everybody else in terms of recruiting. In fact, Howland, Barnes, Williams, and Calipari have all displayed greater potency on the recruiting trail at one time or another. K is not of the Calipari mold, in that he doesn't simply sign half of the top ten every year, but rather he signs a couple of McDonald's All-Americans and mixes them in with top 50 type players who figure to stick around at least a couple years. Obviously, there are inherent advantages to coaching at Duke, and that's one of the reasons he's put so many players in the NBA. But you don't put as many players in the NBA as he has if you're just rolling the ball out and letting them play. Keep in mind, the bulk of K's coaching career took place before the one & done era, when players routinely stuck around for 3 or 4 years. You
had to develop players back then, and your players had to show marked improvements every year, otherwise they wouldn't be as coveted by GM's, and that would have a ripple down effect on the desire of future recruits to play for you.
Duke has put at least a few studs in the NBA, moreso than UConn even - Grant Hill and Elton Brand were bonafide superstars in their heyday, Corey Maggette, Luol Deng and Carlos Boozer were/are all-star caliber players in their prime, Battier has morphed into one of the best role players ever, and guys like Latener, Redick, Ferry, and likely many more I'm omitting have gone onto have respectable careers. That's without including Kyrie Irving, who's on the path to stardom, and Jay Williams, who could have very well gotten there without his horrific injury.
Look, the K love in the media does get tiresome, but a lot of it is warranted. The narrative that he "doesn't develop talent all that well" around here just doesn't seem to add up.