[At the end of the day I remain astonished by the basic concept of "Your child is very bright, so she doesn't deserve a good teacher." I am all in favor of leveling the playing field in all kinds of ways, but wow. That's intense.
I think it's just the thinking that if you are gifted then learning will be easy for you and therefore the quality of teacher is irrelevant.
I don't know if I've mentioned this here before, but I've had conversations with educators and have seen what I call gifted and talented contempt up close.
We were talking about a research study that had "closed the achievement gap." Summary: the bright students in the class tested at exactly the same level of proficiency as they had on the pre-test on the first day of school. The scores of the worst students in the class improved, and this outcome was seen as being a worthy, positive one because the achievement gap had been narrowed. When I pointed out that the talented students hadn't learned a thing, the reply was, "But they were ALREADY.