Scrooged, don't think I've read any of your other threads, am not familiar with your story or anything. I have just read those Indigo Child questions. I can absolutely promise you that when I was a child you could have said yes to all of them about me.
This is not a good thing. Regardless of my, clearly unrecognised, specialness, I was taught politeness, discipline, self-discipline, respect for others, empathy, and many other virtues which did not all come naturally to me.
I learnt to be polite to adults and treat them with respect. My parents would not have described an exchange such as you describe in your op as silliness; it would have been rude and they would have been ashamed of me.
I learnt to cope with being bored and frustrated with boring and frustrating tasks. This is terribly helpful as I have never done anything that does not include an element of boredom and frustration at some point.
I could go on, but I won't.
Please stop describing his behaviour as silliness. It is not.
Incidentally, my daughter was described as indigo by 'someone who knows'. I smiled and said 'oh gosh, how exciting', and forgot about it. Irrelevant. That way lies wasted life.