I was a gifted program kid who was part of a new style of unstructured, learn at your own pace, self-learn program called the "informal" program. This was back in the early 1980s (the program itself had started in the 1970s).
The net result was that the highest achieving gifted kids did really well and the slacker gifted kids (myself included) did abysmally. Turns out some of us needed a level of structure and rigor enforced on us to nurture whatever gifted talents we had. Some kids learned it at home, for some it seemed to be innate and for others we did not have it anywhere in our lives and needed to be instructed in how to study, what to do, when to do it and at what pace.
I mean this is pretty much a summary of all the problems of our education, including the problem highlighted by the article. It's a system for teaching the masses and creating societal outcomes but folks want it to be a system for teaching specifically $their_child according to their needs.
I think a lot of the discussion fades away when you're forced to pin down that it's for raising the floor and that at best what you'll get from public schools with the resources is 1-3 tracks remedial, "normal", and AP/IB. Everyone with special needs in either direction needs to switch to private or a school system in a rich area that can afford more individualized instruction.