If he shot 42 percent but only attempted one or two per game, on uncontested looks against high school defenses, that doesn't mean he will be a capable shooter in college. He shot 26 percent from 3 and 58 percent from the line at Bama. Again, I am not saying whether he is or is not a guy who could be a capable shooter. But the high school numbers mean next to nothing.
Is every high school baseball player who hits .350 a good hitter? Of course not. Some of them wouldn't be able to get a hit against a good D-1 pitcher if you gave them 50 at bats. Go watch a college basketball team warmup and you'll see guys who never even attempt a three in games make a high percentage from distance. In my mind, being a "good shooter" means you can do it in games, when the lights are on and there are other high level athletes guarding you.
Hell, just in the past decade, we have read preseason reports about some of our centers "expanding their range" and shooting well from the perimeter in practice and scrimmages. Then the games start, and they never take a shot outside 12 feet.