Please tell me how it works then. You should generally look to the past to find examples where it did and didn't work? Can't turn a blind eye to the bad ones but there are plenty of guys who had his shooting profile that developed... and plenty who didn't. I'd say its close to 50/50 whether he will develop as an average to slightly above average shooter.
Poor shooting indicators generally lead to poor shooting results. That's how it works. You should look to the past and that includes all players, not one off anecdotes. If you actually think naming a random anecdotal player that did or did not improve his shooting is how it works, I don't know what to tell ya.