Past changes to SAT (originally an aptitude test) have made it a little more like the ACT (an achievement test), and these new changes are likely to make it even more so. If these changes really make them alike, fewer students will take both tests, leading to less time on testing and test prep, and more time on going to school. That's a win.
It would allow students more TIME to pursue their academic passions, get a job, make an impact on their communities, write for their school newspapers, do high level research, and read for pleasure. The irony, of course, is these are exactly the attributes top colleges profess to want from their applicants.