I agree with your comments here, particularly bits about detecting drive in someone that young. I may have taken my personal experiences (I
did say my original comment would be anecdotal!) and applied them too broadly to the difficult and complex issue at hand.
What this boils down to, to me, is the inability for admissions boards to release their exact criteria for admitting a prospective student. If, say, MIT released the exact formula for their perfect student, then people would immediately game the system (more so than they do already).
As some other users pointed out, and as you alluded to here, how can we tell the difference between 'drive' and 'trying to appear well-rounded'? How can we tell if a high schooler wanted to do those five-hundred hours of community service, or if they were coerced into doing so by a parent or school?
I personally believe that there is more to a successful academic (and professional) career than grades, so my initial dispute was the use of standardized test scores and GPA to indicate discrimination when it may have simply been another variable skewing the results.
It would be a very interesting case study for a university to release their full (objective) admissions criteria, however--while, sure, it would result in applicants trying to game the system, would it end up resulting in a more cohesive student base? What would the main factors be? How do you weigh passions vs., as you stated, ambitious parents?
I don't have any of the answers to the questions I posed in this comment (nor in my earlier ones), but it's an interesting thought experiment nonetheless.