y'all are right that the general mood of this piece is wrong - very Harrison Bergeron on a moral level, supported by a warped-to-dishonest presentation of the actual facts.
But "gifted" programs are mostly garbage, and defending them just to get one over on the haters isn't worth it.
"Multiple measures" gifted identification *does* make the whole endeavor capricious and non-academic, but it's been on the rise for 20 years.
If that's what "giftedness" truly is, then sure let's scrap it.