Lifestyle Discussion

Have you ever met a bad trainer for martial arts who has so much potential for his students but he choses some useless methods of teaching them? I used to practice Wing Chun and at the time I thought it is very awesome, it can be applied and so on, however, reality check is that most of it is a garbage. My sensei has students and he can teach them better, applyable techniques but he doesn't. He continues with old ancient techniques and by doing so people who are trained will end up being beaten.