They don't have a target rejection rate. They have a target quality threshold. More software engineers that can productively employed is good for them. It's not

They don't have a target rejection rate. They have a target quality threshold. More software engineers that can productively employed is good for them. It's not like Harvard or other institutions where the point is to be elite, not to do something. The more SEs Google can hire the better. If they could reduce their false negative rate in half that would materially impact their bottom line. False negative for Harvard is basically undefined. They could easily dectuple the number of students they admit without compromising on academic quality or family wealth and making only very small declines in average power level (dictator, princes, senator, governor children)