When your 3's each year go 7,3,2,1,0 then there are most likely three issues. You have an injury (which Nate did), you lost all confidence in your shot (for whatever reason), or the offensive scheme does not include or want you. In Nate's case I think it was all three.
But Nate was money in high school from 15 feet. He had all the tools to be a stretch four.