Good information except, this IS the traditional martial arts way of using a groin kick. I teach karate ( a form of Shotokan and Goju-ryu) and jujutsu. Traditional Okinawan karate has always had jujutsu in it and is very close quarters fighting. A traditional martial artist will not try to do any kick from a distance. That’s tournament behavior and thinking. A distance kick (such as Bruce Lee’s yoko kekomi) is mainly a distancing strike meant to keep someone back (or score points,) but there is rarely enough time and it can easily be caught by someone who knows how to fight. A kick to incapacitate would mainly be used in close and always to a low target like an ankle, knee, groin, and yes, usually after or during an attack to the face/head/vital point on either. It’s ALL in the kata and the bunkai. Unfortunately, too many martial arts are tournament MA these days and are not conducive to self defense. The practitioner needs to know there’s a great difference and should seek out a good sensei who also knows and teaches the true art for combat and SD.