Earlier quoted context omitted.
It's far easier for rich students to game GPA, college essays and extracurriculars than it is for them to game the SAT. For GPA, they can hire a private tutor in the subject they're struggling with. There are services out there that will basically write your english essay for you / do your math/science homework. For college essays, they can hire college counselors to help them draft a compelling essay. For extra curr…
As a counterargument, a fake ID is all that a rich person needs to put a smart kid in their place at the testing center. Those places are usually huge, nobody knows anyone, and if you flash a legit looking ID, you will have no trouble sitting the test. GPA and such require effort over years to game (and maybe the kid actually learns something from all that tutoring, who knows).
Either way, if you cheated your way into MIT, expect to fail out. The hand holding stops there.