The eleven+ test was flawed, all tests are flawed, but what is the alternative? If there isnt an objective test of disability of some kind, then we might as well claim that we are dying too: well it worked as a "Get Out Of Jail Free" card for Abdelbaset al-Megrahi.
There is nothing new about testing and assessment, and all of the tests have a sophisticated and objective appeal process, so I can only conclude that this anti-testing campaign is the usual scaremongering and rhetoric.
"This is one of the hardest lessons for humans to learn. We cannot admit that things might be neither good nor evil, neither cruel nor kind, but simply callous - indifferent to all suffering, lacking all purpose." - Richard Dawkins