SAT correlates well with college performance and moreover must be used to obtain the best college performance predictors we have (or something highly correlated with SAT).

Some elite law schools did a study where they admitted underprivileged students with bad LSAT scores and guess what, those students did great and got great jobs.

Do you have the link to the study?

For the SAT the difference between winning and losing in college admission is if you can prepare for it. It's not a test you take cold. That is the biggest issue with it so it advantages those with more resources.

The same task force you're quoting also recommended the SAT be revamped to reduce the inherent bias among the questions.

“black/white comparison on the SAT verbal test, some evidence of bias exists, but the bias is against white students on some questions against black students in other cases. Furthermore, our analysis of the results suggest that for this one, the effects are far too small to explain much of the SAT gap in test scores between black and white students.“ nonetheless the SAT math lets them find students who’s GPAs aren’t super high for personal reasons and also distinguish between students with the same GPA