I believe you may be missing the point here, but do please forgive me if I am wrong.
Indigo children, Crystal children, Rainbow children or whatever you want to call (please feel free to use the words such as ADHD or some other label in it's place if you are more comfortable with this)
They transcend egos so dont worry about the harm of bigging kids up un necessarily. They are beyond the point where this matters, it's about being understood, they vibrate on a completely different frequency to normal children/adults and just need to connect with someone or something that understands them.
It's quite simple, not a phenomenom, just every day stuff