This. Yes. As someone who was classified as "gifted" and went to one of these special programs, your third point is a common occurrence. All that aside though

This. Yes. As someone who was classified as "gifted" and went to one of these special programs, your third point is a common occurrence. All that aside though, I think the very notion of gifted-ness is harmful (in a labelling sense) to both the are's and the are-not's. Your first two points are relevant on this. For that reason, I'm not sure we should even discuss/judge gifted-ness, regardless of whether it even exists.