You forgot that the SAT requirement is not exclusive but an additional data point. While I agree that it could narrow the path for truly good employees, I’d argue that an additional data point like SAT (+ GPA) could tell the employer a lot about consistency of the applicants. Or at least an interesting talking point (“I see you got a very high SAT score but your GPA was lower, what happened?”), if they care.

I think it could serve the purposes of hiring fresh/young graduates. However, it’s still weird if they requested it for people already 5-10 years or more in the industry.