While the law school point does drive it home, it completely excludes the part where he obsessively researched The Hood to discover he was Oliver Queen, trained under Talia Al Ghul to learn the skills of the League Of Assassins, and obtained his weapons in police lockup to effectively emulate him.
Josh Segarra makes a valid point in his response to Arrow fans in noting Adrian Chase went to a lot of trouble to really screw up Oliver’s life.
All that said, if successfully completing the Bar Exam is as hard as the non-practicing law public has been lead to believe, all that was probably a walk in the park in comparison!