Look, guy. I offered my opinion, plainly & civilly, that a "dentist" who can't tell two basic restorations apart shouldn't be given a license to practice. You might disagree with me, and that's your prerogative, but beyond that it's tough cookies. You don't get to tell me to shut up just because my suggestion that a dentist should possess minimal degrees of knowledge and technical competence strikes uncomfortably close to home for you or your friends.
If you think I'm full of crap, that's your prerogative too, but don't just sit there complaining about how unfair I'm being. The job of these tests is to make you know what you're doing in order to take good care of live patients. Go out and nail them, and we both win. Otherwise, the tests are just doing their job properly.