Video games also have potential legal advantages over IQ tests for companies. You could argue that "we only hire people good at video games to get people who fit our corporate culture of liking video games" but that argument doesn't work as well for IQ tests.
yet again an original post title that self-sneers
If you're going to hiring discrimination*, don't talk about your discrimination strategy in public.
*(I assume the lesswrongeurs are assuming that IQ tests are going to be made illegal because black IQ test scores (on average) are lower than white IQ test scores (on average) and rather than interrogate this weird data the lesswrongeurs seem to have accepted as gospel that this test gap is immutable and possibly just the natural side effect of having melanin rather than a product of 100s of variables that had nothing to do with biology)