Presumably, those people could prove their worth through other methods, ideally one closely related to job at hand. If they can't do that, then maybe the IQ test was a bad proxy.
> Does that mean they are racist too??
Also probably yes, but I don't want to argue that.
I'm not saying not to test using other methods too.
People usually can be evaluated on their analytic skills through other means that are more conversational and interrogatory, which in turn also assess soft-skills, which contrary to McNamara Fallacy adherents, are in truly short supply here in techville.
It's not measuring aptitude of test taking, it's measuring your ability to detect and apply patterns.
If you train yourself to get better at seeing patterns of dots in boxes, that doesn’t generalize nearly as well as a muscle does. It doesn’t make you a better chess player. There’s plenty of science to back this up.
At large, IQ tests in recruiting are training applicants to be good at IQ tests.