Billy-
Your post sounds like you have a lot of personal regrets from childhood and that you were very frustrated by many experiences.
I am one of those parents that pushes my child. I do make him do things. I make him do his homework in nice handwriting, even when his teacher doesn't care. I make him learn to work hard, make mistakes, deal with it and move on. Perhaps you did not have the same experience, but for me as a gifted child, I did not make mistakes because work was never hard. Entering college, I had the harsh realization that I couldn't just do it on a whim without cracking open a book or taking notes during the lecture. This is the story of many, many gifted kids who were not taught to work hard.
Discussing IQ scores and programs is a way for us to add challenge, find organizations that understand how to work with our children and can enrich their education. You yourself have recommended CTY. I would not have known about it or been able to recommend it to my son without this group. It's not a way for us to rank, compare or shove our kids down some Ph.D by 8 path. I haven't seen anyone here like that.
Surely you must know that your GAI of 150 makes you very, very different in a classroom from a student with a GAI of 100. But how would we help our kids not feel that isolation and "weirdness" without discussing it?