Yeah but knowledge of laws and how they apply is only a very small fraction of the actual job of being an attorney. It's a test to make sure that you understand the legal framework but it says nothing about your actual ability to be a good lawyer. I mean, there's already plenty of well-known cases of totally incompetent lawyers being out there who have passed the bar exam technically. So I guess people probably never considered it to be a test of actual job aptitude, but more of just a basic knowledge of law and the legal framework. But I don't really know anything about law so this is just speculation really