The place where I train has stripes on the belts. It's been helpful for me as a brand new guy, cause it gives me an indication of how brutal each 5 minutes of sparring will be. I know that if I'm paired up with a blue belt and above, it's gonna hurt, and if I'm sparring with a blue belt or above I'm pretty much a non-compliant tackling dummy. White belts with 2 stripes or above still dominate me, but the'll have to work a little for it. I have a chance to think about how to counter some submissions... usually about 1/2 second before I tap. I can usually hang with the one stripes and below for some amount of time, and can even try to work on passing guard or sweeping from the bottom a little. I have a chance to work on shoulder pressure and keeping my hips low, and if the stars are aligned in just the right manner, I'll isolate an arm and actually get a tap on an americana or kimura. As a noob, I can say that the stripes don't seem to be a part of any sort of concessions to whatever American ADHD stereotype or need on anyone's part to get some contrived sense of accomplishments.