Real GM agrees with you:
Hayward's perimeter shot is far from terrible and looks like it should be more effective, but it is mechanically flawed. He has too much left hand on his shot, as it extends almost even with his right-hand follow-through. The purest shooters will have almost no movement at all with their left (guide) hand where it is completely silent, but it is far too pronounced for Hayward.
Hayward does a good job of setting his feet, squaring up to the bucket and he has good arc and rotation, but the follow-through holds him back from being a far more accurate shooter. I have little doubt that his shooting flaws are correctable and will be sorted out, but this isn't a part of his game his team will immediately be able to rely upon.
There is sometimes a common logic that small school stars will see their shooting efficiency increase in the NBA because they won't see the same kind of defensive attention as they did in school, but Hayward frequently received clean, wide-open looks and teams were much more concerned with stopping his dribble penetration.
Because Hayward isn't a pure shooter and possibly never become one, he doesn't have that safety net of becoming an off the bench three-point specialist. His NBA success could become an all or nothing equation of whether or not he can successful be a shotmaker off the dribble, which is most translatable skill.
Read more:
https://www.realgm.com/src_feature_...eport_gordon_hayward_of_butler/#ixzz0sYDbUQXd