I realize you can not control the martial arts school you choose, you have to do what the martial arts instructor tells, you are the one who chooses the school, if you don't like it then leave, you are free to do that,if you want to train how to punch people on the face while they are on the ground, why on earth would you go to a Taekwondo school, I see people who want to learn how to choke, how to break arms, and how to fight in MMA, yet they go to a Kung fu or Taekwondo, Karate school, and say that it sucks.
I f I had told my Taekwondo instructor if we could train BJJ, he would've kicked me in the face because he didn't like MMA.
If you want to learn how to handle different types of weapons you cannot go to a boxing school and then criticize it for not teaching weapons
If you want to learn how to do all kinds of punching, kicking, knees and elbows combinations and the muay thai clinch, you cannot go to a WTF TKD school and then criticize it because it doesn't teach you Muay Thai boxing, if you wanted to learn all the striking, grappling, self defense techniques of Taekwondo then you'll have to find a really good school, instead of going to the first one you find.
Bjj is not in the Taekwondo curriculum, stick fighting is not in the Taekwondo curriculum, the instructor migh've teach me a bit of Judo, because it's his school and he can do whatever he wants, I'm the one paying to attend his school. That's why you have to choose your school wisely, find out why you are training, are you training for self defense, for fitness. to compete, for health, to have a balance between body mind and spirit, to beat down people and get into bar fights, to train in weapons; and then choose the school accordingly to what you want.