i don't consider my self a martial artist, it not really an English expression, I'm certainly not good enough to consider myself an artist, I'm a middle aged bloke learning karate. I'm as good as i am and will be as good as i can be. Having,a grades test will not make me better, much less better sooner.
the lower belts use a kata demonstration as the test, I'm not good at dancing , i refuse to take kata seriously as a test of my karate ability. There are people of a higher grade who i can knock over with ease, their grades haven't made them better than i am. They spend Time. Learning kata, i spend time getting fitter and,stronger and faster.