There are actually two kinds of contemporary Taekwondo, one is called attack Taekwondo and the other is called traditional Taekwondo.
The game we watched at the Olympic Games was Wushu Taekwondo.
Wushu has many rules, such as no kicking below the belt, no punching in the face and so on. This is of course a disadvantage in the face of unexpected events in life. Moreover, in real life, it is difficult to kick your opponent down with one leg. Don't trust movies. In fact, even if you are Peter Aziz, it is difficult to do it. The reason why Taekwondo has evolved into this is because in the process of modern development, Taekwondo has always taken the sports route-just like playing basketball, it is just a sport.
Tradition, on the other hand, attaches great importance to power and can be used in any way. In particular, many taekwondo masters in Europe and America have introduced locking techniques and wrestling techniques, which have multiplied their power and achieved good results indiscriminately in many competitions.
So it's not that Taekwondo is useless, it depends on what you learn and how you learn it.
Finally, to paraphrase Jet Li's version of Huo Yuanjia, "I think there is really no distinction between high and low martial arts, and only those who practice it have strong and weak points ..."