First of all I think you are confused about what an Indigo is. It's not a label someone invented to make people with problems feel better. It is an aura colour that didn't exist until recently (probably the past 50 years. Before that would be rare though some think it existed). The people with that aura colour (indigo blue) usually have certain characteristics.
See here traits of the indigo adult http://www.metagifted.org/topics/metagifted/indigo/adultIndigos/are...
It's not about saying we are better than anyone; it's that we aren't exactly the same. We think, feel, and function in ways that people who aren’t indigos probably wouldn't understand. And not all indigos have or did have behavioral problems. A short attention span in an indigo child is most likely boredom or the failure of the school system (which is ridiculously outdated). I was told I had learning disabilities and ADD (I was once told I had ADHD and was prescribed Ritalin which completely knocked me out within 10 minutes. How dumb of a doctor to give it to a lethargic 14 year old. NOT hyper active, LETHARGIC. lol some people...) just because I could not read and write in elementary school. But that was because my second grade teacher did not have the means to teach me those skills. It wasn't her fault; it was just the flawed system she was following. It was almost 13 years ago but I remember being completely uninterested while in her class that I did not even bother to learn. Then after a few weeks of being helped by a remarkable tutor I was reading and writing a grade ahead of the whole class and thus started my gift in creative writing. I also received very high marks throughout high school, however was bored most of the time and prone to ditching. Kids with condition like ADD or ADHD can't help their short attention span. Indigos just choose not to. It's more of the mentality of 'Want my attention? Well then prove your worthy first then I'll show you what I’ve got'.
If you don't get it, don't worry. I doubt everyone would.