If Thomas Edison would have spent more time and money on light bulb designs that didn’t work, you would still be illuminating your nights by lighting solid wax. If the Wright Brothers focused their energies on airplanes that didn’t fly, you would still have to go to Europe on a boat.
And that is the way the British primary education system works; focusing more time, money and resources on children that are smarter than ones that aren’t. But there are serious proposals to go back to the candle and boat days. It isn’t mentioned in the prose of this article, but the whole thing I think has to do with race, and racial pandering to Britain’s St. Minorities.