>Standardized tests themselves have mostly tested not IQ or domain knowledge, but how anxious you are taking tests. This does predict later academic performance, sure, but to say that this anxiety is disconnected from demographics sounds like a rather strong claim. Instead you have that it is more disconnected than GPA and essays and extracurriculars which is not saying much.

saying 'tests are better than the other primary indicators we use to admit students to colleges' isn't saying much? this is nonsense