Sorry. I think i have now gone way off topic as far as gifted ed is concerned. These ideas really have no bearing on gifted ed at all, because statistically a gifted kid will be always in the minority, usually as a minority of one, and our HG+ children may be a minority of one in the whole school. So the answer to the trope of putting gifted children in the regular classrooms in order to lift standards and improve the experience for all is that if you want children to do heavy lifting, put them in the majority LOL.
Similarly, if you remove the statistical 0.5 gifted children from the regular classrooms, it doesn't change composition in any meaningful way.
I imagine that for someone like Devos, the need for public gifted ed does not compute at all. If you're so smart, why don't you just go to private school?!?