There's a reason it takes you years of study and practice to become a black belt: as much as you need to learn the skills of various punches and kicks, you also need to gain the experience of when to use them and the wisdom of choosing the right move for the right situation. Although going around and using the Crying Dragon Death Touch as the opening move in every fight you get into is a valid strategy, it turns out that you will run out of sparring partners pretty quickly. Yes you can learn the moves pretty quickly and achieve proficiency with them in short order, but without experience to guide your actions you are still just another n00b stumbling around and making messes.
And that's kind of how it was with my quick entry into the world of ham radio.